
Community Calendar

Volunteer Night
Looking for a fun and meaningful way to give back to the community? Join us for volunteer night!
Whether you're a seasoned bike mechanic or just someone who loves bikes and wants to help out, we welcome you to come and lend a hand.
Generally, on scrap nights we have a few projects volunteers can work on:
Take apart bikes and salvage some components for reuse
Assess, clean, and fix up bikes
Organize the shop and help with cleaning tasks
Help plan and prepare for upcoming events, like the Bike Swap on March 29th or our Volunteer Appreciation Party in May!
Special opportunities like delivering bikes to our partners or helping community outreach
Learn about bikes and Chain Reaction while enjoying good company
No experience or RSVP is necessary!

Volunteer Night
Looking for a fun and meaningful way to give back to the community? Join us for volunteer night!
Whether you're a seasoned bike mechanic or just someone who loves bikes and wants to help out, we welcome you to come and lend a hand.
Generally, on scrap nights we have a few projects volunteers can work on:
Take apart bikes and salvage some components for reuse
Assess, clean, and fix up bikes
Organize the shop and help with cleaning tasks
Help plan and prepare for upcoming events, like the Bike Swap on March 29th or our Volunteer Appreciation Party in May!
Special opportunities like delivering bikes to our partners or helping community outreach
Learn about bikes and Chain Reaction while enjoying good company
No experience or RSVP is necessary!

New Volunteer Orientation
Interested in volunteering? Want to learn more and take a tour of the shop? Join our New Volunteer Orientation. We’ll be covering all the ins and outs of volunteering at the shop, including the signup and scheduling process, shop roles, activities and workflow, and if you’re interested, how to quickly assess donated bikes and bike parts.
If you’d like to become a volunteer at Chain Reaction, check out the volunteer link in our bio and RSVP by emailing us at crbh.volunteer@gmail.com .

Community Workshop: ABCD’s of Maintenance
Air, Brakes, Chain, and Derailleur maintenance!
Join us for a hands-on, community-powered workshop where we’ll demystify the basics of keeping your bike in tip-top shape! Whether you’re a new rider or just want to feel more confident on two wheels, this is the perfect chance to learn and connect.
🛠️ What we’ll cover:
✅ A – Checking tire pressure & avoiding flats
✅ B – Adjusting & inspecting brakes
✅ C – Cleaning & caring for your chain
✅ D – Dialing in your derailleurs for smooth shifting
We highly encourage you to bring your own bike so you can learn the techniques and tips on your personal rig. We’ve got plenty of bikes to practice on, in case you need to borrow one. We’ll cover the necessary tools and techniques to keep you rolling!
Space is limited to 20 participants, so get registered!
This class is FREE to the community. If you would like to donate to Chain Reaction for attending the class, we’d suggest a $10 donation.

Harvest Ride 2025
Grab your flannel, hop on your trusty steed, and join us for the Harvest Ride! We’ll roll out from Chain Reaction Bike Hub, wind our way through Iowa’s golden country roads, and finish at the one and only Bloomsbury Farm — just in time for peak pumpkin vibes.
Every pedal stroke supports our mission to make biking accessible, affordable, and empowering for everyone in our community. You ride, we keep the wheels turning for those who need them most.
Expect crisp autumn air, cornfield photo ops, and enough fall spirit to fill your panniers (no promises on fitting a whole pumpkin in there… but we’ve seen it done).
📅 Date: Sunday, September 28
⏰ Start: 9:00 AM at Chain Reaction Bike Hub
🏁 Finish: Bloomsbury Farm (with plenty of time to enjoy all the farm fun!)
The full ride can be found here: https://ridewithgps.com/routes/51742026
Whether you ride for the cider, the scenery, or the sheer joy of leaf-crunching under your tires, this is the ride for you. 🍁

FTWN Workshop: Trailside Maintenance
Calling all FTWN (femme/trans/women/nonbinary) folks - let’s talk trailside maintenance.
In this hands-on workshop, we’ll work through the basics of common trailside maintenance to keep you rolling, safe and confident!
We’ll cover:
✅ Fixing a flat tire - how to fix a flat, and what tools to carry
✅ Chain care - fixing a slipped chain, how to take care of your bike after a ride
✅ Common cleaning and adjustments - how to keep your bike riding longer, better
✅ Q&A - anything that’s on your mind - tools, tricks, etc
If you have a bike - bring it! It's okay if it's got some dust on it - this is a no judgment zone. If you don’t have a bike, let us know so that you can borrow one from the hub.
Reminder: Bike maintenance can be a greasy adventure. Wear clothes you don’t mind getting dirty.
Space is limited to 20 participants, so register here!
This class is FREE to the community. If you would like to donate to Chain Reaction for attending the class, we’d suggest a $10 donation.
Any questions, please reach out to us at CRBH.Volunteer@gmail.com
Sorry fellas, this event is limited to women/femme/trans/nb volunteers and participants.

Volunteer Night
Looking for a fun and meaningful way to give back to the community? Join us for volunteer night!
Whether you're a seasoned bike mechanic or just someone who loves bikes and wants to help out, we welcome you to come and lend a hand.
Generally, on scrap nights we have a few projects volunteers can work on:
Take apart bikes and salvage some components for reuse
Assess, clean, and fix up bikes
Organize the shop and help with cleaning tasks
Help plan and prepare for upcoming events, like the Bike Swap on March 29th or our Volunteer Appreciation Party in May!
Special opportunities like delivering bikes to our partners or helping community outreach
Learn about bikes and Chain Reaction while enjoying good company
No experience or RSVP is necessary!

New Volunteer Orientation
Interested in volunteering? Want to learn more and take a tour of the shop? Join our New Volunteer Orientation. We’ll be covering all the ins and outs of volunteering at the shop, including the signup and scheduling process, shop roles, activities and workflow, and if you’re interested, how to quickly assess donated bikes and bike parts.
If you’d like to become a volunteer at Chain Reaction, check out the volunteer link in our bio and RSVP by emailing us at crbh.volunteer@gmail.com .

New Volunteer Orientation
Interested in volunteering? Want to learn more and take a tour of the shop? Join our New Volunteer Orientation. We’ll be covering all the ins and outs of volunteering at the shop, including the signup and scheduling process, shop roles, activities and workflow, and if you’re interested, how to quickly assess donated bikes and bike parts.
If you’d like to become a volunteer at Chain Reaction, check out the volunteer link in our bio and RSVP by emailing us at crbh.volunteer@gmail.com .
Community Group Ride: Sac & Fox
Bonus fall community ride! Let’s ride something NOT paved. Leaving 5:30pm from Prairie Park Fishery - we’ll split up between the LAMBA singletrack and the crushed limestone Sac & Fox Trail. This is a no-drop ride - a choose-your-own adventure. Never tried mountain biking before? New to gravel? Let’s try it out! Grab your helmet, pack some water, and let's roll! See Facebook for event details.
(Note: bring lights if you have them, note the earlier start time to leave at 5:30pm, and this is not a ride for super skinny road tires, but everything else should work fine!)

Community Workshop: Tubes, Tires, and Wheels
Flat tire on the trail? Heading out for a ride only to realize that your tube isn’t holding air?
Join us for a step-by-step guide on how to:
Remove and replace a bike tube and tire
Patch a tube
Reinstall a wheel
We highly encourage you to bring your own bike so you’re able to learn the techniques and tips on your personal rig. We’ve got plenty of bikes to practice on in case you need to borrow one. We’ll cover the necessary tools and techniques to keep you rolling!
Space is limited to 20 participants, so get registered!
This class is FREE to the community. If you would like to make a donation to Chain Reaction for attending the class, we’d suggest a $10 donation.

Volunteer Night
Looking for a fun and meaningful way to give back to the community? Join us for volunteer night!
Whether you're a seasoned bike mechanic or just someone who loves bikes and wants to help out, we welcome you to come and lend a hand.
Generally, on scrap nights we have a few projects volunteers can work on:
Take apart bikes and salvage some components for reuse
Assess, clean, and fix up bikes
Organize the shop and help with cleaning tasks
Help plan and prepare for upcoming events, like the Bike Swap on March 29th or our Volunteer Appreciation Party in May!
Special opportunities like delivering bikes to our partners or helping community outreach
Learn about bikes and Chain Reaction while enjoying good company
No experience or RSVP is necessary!

New Volunteer Orientation
Interested in volunteering? Want to learn more and take a tour of the shop? Join our New Volunteer Orientation. We’ll be covering all the ins and outs of volunteering at the shop, including the signup and scheduling process, shop roles, activities and workflow, and if you’re interested, how to quickly assess donated bikes and bike parts.
If you’d like to become a volunteer at Chain Reaction, check out the volunteer link in our bio and RSVP by emailing us at crbh.volunteer@gmail.com .

Volunteer Night
Looking for a fun and meaningful way to give back to the community? Join us for volunteer night!
Whether you're a seasoned bike mechanic or just someone who loves bikes and wants to help out, we welcome you to come and lend a hand.
Generally, on scrap nights we have a few projects volunteers can work on:
Take apart bikes and salvage some components for reuse
Assess, clean, and fix up bikes
Organize the shop and help with cleaning tasks
Help plan and prepare for upcoming events, like the Bike Swap on March 29th or our Volunteer Appreciation Party in May!
Special opportunities like delivering bikes to our partners or helping community outreach
Learn about bikes and Chain Reaction while enjoying good company
No experience or RSVP is necessary!

Meet Me at the Market Group Ride - Last one of 2025!
We’re teaming up with our friends at NewBo City Market! Our volunteers will lead the Meet Me at the Market group rides starting Thursday, May 8, and run all summer! These are no-drop rides, so all paces are welcomed and encouraged! A new route will be posted every week. Grab your helmet, pack some water, and let's roll! See Facebook for event details.

Women’s Workshop: Commuting Basics and Community Ride
Calling all women/femme/trans/nb folks - are you ready to ride your bike to school or work? Let’s learn some commuting basics and share a 3-5 mile group ride.
In this hands-on workshop we’ll work through the basics of bike commuting.
We’ll cover:
✅ Bike Setup - basic bike fit, tire pressure
✅ Bike Gear - lights, bags/panniers, locks, rain gear, bike repair kits (and where to learn those skills)
✅ Riding basics on trail and road - communication signals, tips to navigate traffic
✅ Q&A - anything that’s on your mind - commuting clothes, frugal gear, best routes to get from your home to work
✅ Group ride - a 3-5 mile loop around town to see some city trails and bike lanes.
If you have a bike - bring it! It's okay if it's got some dust on it - this is a no judgment zone. We’ll have volunteers that can help you set up and walk through the functions of your bike. If you don’t have a bike, let us know so that you can borrow one from the hub.
Space is limited to 20 participants, so register here!
This class is FREE to the community. If you would like to donate to Chain Reaction for attending the class, we’d suggest a $10 donation.
Any questions, please reach out to us at CRBH.Volunteer@gmail.com
Sorry fellas, this event is limited to women/femme/trans/nb volunteers and participants.

Volunteer Night
Looking for a fun and meaningful way to give back to the community? Join us for volunteer night!
Whether you're a seasoned bike mechanic or just someone who loves bikes and wants to help out, we welcome you to come and lend a hand.
Generally, on scrap nights we have a few projects volunteers can work on:
Take apart bikes and salvage some components for reuse
Assess, clean, and fix up bikes
Organize the shop and help with cleaning tasks
Help plan and prepare for upcoming events, like the Bike Swap on March 29th or our Volunteer Appreciation Party in May!
Special opportunities like delivering bikes to our partners or helping community outreach
Learn about bikes and Chain Reaction while enjoying good company
No experience or RSVP is necessary!

Meet Me at the Market Group Ride
We’re teaming up with our friends at NewBo City Market! Our volunteers will lead the Meet Me at the Market group rides starting Thursday, May 8, and run all summer! These are no-drop rides, so all paces are welcomed and encouraged! A new route will be posted every week. Grab your helmet, pack some water, and let's roll! See Facebook for event details.

Volunteer Night
Looking for a fun and meaningful way to give back to the community? Join us for volunteer night!
Whether you're a seasoned bike mechanic or just someone who loves bikes and wants to help out, we welcome you to come and lend a hand.
Generally, on scrap nights we have a few projects volunteers can work on:
Take apart bikes and salvage some components for reuse
Assess, clean, and fix up bikes
Organize the shop and help with cleaning tasks
Help plan and prepare for upcoming events, like the Bike Swap on March 29th or our Volunteer Appreciation Party in May!
Special opportunities like delivering bikes to our partners or helping community outreach
Learn about bikes and Chain Reaction while enjoying good company
No experience or RSVP is necessary!

New Volunteer Orientation
Interested in volunteering? Want to learn more and take a tour of the shop? Join our New Volunteer Orientation. We’ll be covering all the ins and outs of volunteering at the shop, including the signup and scheduling process, shop roles, activities and workflow, and if you’re interested, how to quickly assess donated bikes and bike parts.
If you’d like to become a volunteer at Chain Reaction, check out the volunteer link in our bio and RSVP by emailing us at crbh.volunteer@gmail.com .

Meet Me at the Market Group Ride
We’re teaming up with our friends at NewBo City Market! Our volunteers will lead the Meet Me at the Market group rides starting Thursday, May 8, and run all summer! These are no-drop rides, so all paces are welcomed and encouraged! A new route will be posted every week. Grab your helmet, pack some water, and let's roll! See Facebook for event details.

Community Workshop: Bike To School
Back to School, Back to Basics!
Join us at Chain Reaction Bike Hub for a hands-on workshop covering the ABCs of Bike Maintenance — Air, Brakes, and Chains.
Whether you’re pedaling to class, cruising to work, or just rolling for fun, we’ll help you keep your bike in A+ condition and ready to roll this fall.
🛠️ What we’ll cover:
✅ A – Checking tire pressure & avoiding flats
✅ B – Adjusting & inspecting brakes
✅ C – Cleaning & caring for your chain
Wednesday, August 13th @ 6:00 PM
1010 3rd Ave SW, Cedar Rapids
Totally free (Donations welcome)! Just bring your bike and your curiosity.
Bring your bike, bring a friend, and leave with the know-how to keep your wheels rolling smoothly all year long!
Space is limited to 20 participants, so get registered!

Volunteer Night
Looking for a fun and meaningful way to give back to the community? Join us for volunteer night!
Whether you're a seasoned bike mechanic or just someone who loves bikes and wants to help out, we welcome you to come and lend a hand.
Generally, on scrap nights we have a few projects volunteers can work on:
Take apart bikes and salvage some components for reuse
Assess, clean, and fix up bikes
Organize the shop and help with cleaning tasks
Help plan and prepare for upcoming events, like the Bike Swap on March 29th or our Volunteer Appreciation Party in May!
Special opportunities like delivering bikes to our partners or helping community outreach
Learn about bikes and Chain Reaction while enjoying good company
No experience or RSVP is necessary!

Meet Me at the Market Group Ride
We’re teaming up with our friends at NewBo City Market! Our volunteers will lead the Meet Me at the Market group rides starting Thursday, May 8, and run all summer! These are no-drop rides, so all paces are welcomed and encouraged! A new route will be posted every week. Grab your helmet, pack some water, and let's roll! See Facebook for event details.

Volunteer Night
Looking for a fun and meaningful way to give back to the community? Join us for volunteer night!
Whether you're a seasoned bike mechanic or just someone who loves bikes and wants to help out, we welcome you to come and lend a hand.
Generally, on scrap nights we have a few projects volunteers can work on:
Take apart bikes and salvage some components for reuse
Assess, clean, and fix up bikes
Organize the shop and help with cleaning tasks
Help plan and prepare for upcoming events, like the Bike Swap on March 29th or our Volunteer Appreciation Party in May!
Special opportunities like delivering bikes to our partners or helping community outreach
Learn about bikes and Chain Reaction while enjoying good company
No experience or RSVP is necessary!

New Volunteer Orientation
Interested in volunteering? Want to learn more and take a tour of the shop? Join our New Volunteer Orientation. We’ll be covering all the ins and outs of volunteering at the shop, including the signup and scheduling process, shop roles, activities and workflow, and if you’re interested, how to quickly assess donated bikes and bike parts.
If you’d like to become a volunteer at Chain Reaction, check out the volunteer link in our bio and RSVP by emailing us at crbh.volunteer@gmail.com .

Meet Me at the Market Group Ride
We’re teaming up with our friends at NewBo City Market! Our volunteers will lead the Meet Me at the Market group rides starting Thursday, May 8, and run all summer! These are no-drop rides, so all paces are welcomed and encouraged! A new route will be posted every week. Grab your helmet, pack some water, and let's roll! See Facebook for event details.

Community Workshop: Tubes, Tires, and Wheels
Flat tire on the trail? Heading out for a ride only to realize that your tube isn’t holding air?
Join us for a step-by-step guide on how to:
Remove and replace a bike tube and tire
Patch a tube
Reinstall a wheel
We highly encourage you to bring your own bike so you’re able to learn the techniques and tips on your personal rig. We’ve got plenty of bikes to practice on in case you need to borrow one. We’ll cover the necessary tools and techniques to keep you rolling!
Space is limited to 20 participants, so get registered!
This class is FREE to the community. If you would like to make a donation to Chain Reaction for attending the class, we’d suggest a $10 donation.

Volunteer Night
Looking for a fun and meaningful way to give back to the community? Join us for volunteer night!
Whether you're a seasoned bike mechanic or just someone who loves bikes and wants to help out, we welcome you to come and lend a hand.
Generally, on scrap nights we have a few projects volunteers can work on:
Take apart bikes and salvage some components for reuse
Assess, clean, and fix up bikes
Organize the shop and help with cleaning tasks
Help plan and prepare for upcoming events, like the Bike Swap on March 29th or our Volunteer Appreciation Party in May!
Special opportunities like delivering bikes to our partners or helping community outreach
Learn about bikes and Chain Reaction while enjoying good company
No experience or RSVP is necessary!

Meet Me at the Market Group Ride
We’re teaming up with our friends at NewBo City Market! Our volunteers will lead the Meet Me at the Market group rides starting Thursday, May 8, and run all summer! These are no-drop rides, so all paces are welcomed and encouraged! A new route will be posted every week. Grab your helmet, pack some water, and let's roll! See Facebook for event details.

Community Workshop: Women’s (Re)Introduction to Biking
Calling all women/femme/trans/nb folks that have not biked ever / as an adult / in years, or just want to get more comfortable with biking basics.
Join us for a hands-on workshop where we’ll demystify the basics of biking - led by women. This might be the first of series to get comfortable with commute/city biking if there's interest!
We’ll cover:
✅ Bike Setup - basic bike fit, seat height, lights
✅ Shifting basics - when to shift, how to shift, types of equipment
✅ Communication - hand signals, verbal signals to indicate your planned route
✅ Q&A - anything that’s on your mind - sore rears, favorite routes, frugal gear, anything
✅ Group ride - a 2-3 mile loop through the park to practice signals, shifting, and try out the things we’ve learned
If you have a bike - bring it! It's okay if it's got some dust on it - this is a no judgment zone. We’ll have volunteers that can help you set up and walk through the functions of your bike. If you don’t have a bike, we hope to bring a few from the hub that you can try out.
Space is limited to 20 participants, so register here!
This class is FREE to the community. If you would like to donate to Chain Reaction for attending the class, we’d suggest a $10 donation.
Any questions, please reach out to us at CRBH.Volunteer@gmail.com
Sorry fellas, this event is limited to women/femme/trans/nb volunteers and participants.

New Volunteer Orientation
Interested in volunteering? Want to learn more and take a tour of the shop? Join our New Volunteer Orientation. We’ll be covering all the ins and outs of volunteering at the shop, including the signup and scheduling process, shop roles, activities and workflow, and if you’re interested, how to quickly assess donated bikes and bike parts.
If you’d like to become a volunteer at Chain Reaction, check out the volunteer link in our bio and RSVP by emailing us at crbh.volunteer@gmail.com .

Volunteer Night
Looking for a fun and meaningful way to give back to the community? Join us for volunteer night!
Whether you're a seasoned bike mechanic or just someone who loves bikes and wants to help out, we welcome you to come and lend a hand.
Generally, on scrap nights we have a few projects volunteers can work on:
Take apart bikes and salvage some components for reuse
Assess, clean, and fix up bikes
Organize the shop and help with cleaning tasks
Help plan and prepare for upcoming events, like the Bike Swap on March 29th or our Volunteer Appreciation Party in May!
Special opportunities like delivering bikes to our partners or helping community outreach
Learn about bikes and Chain Reaction while enjoying good company
No experience or RSVP is necessary!

Meet Me at the Market Group Ride
We’re teaming up with our friends at NewBo City Market! Our volunteers will lead the Meet Me at the Market group rides starting Thursday, May 8, and run all summer! These are no-drop rides, so all paces are welcomed and encouraged! A new route will be posted every week. Grab your helmet, pack some water, and let's roll! See Facebook for event details.

Volunteer Night
Looking for a fun and meaningful way to give back to the community? Join us for volunteer night!
Whether you're a seasoned bike mechanic or just someone who loves bikes and wants to help out, we welcome you to come and lend a hand.
Generally, on scrap nights we have a few projects volunteers can work on:
Take apart bikes and salvage some components for reuse
Assess, clean, and fix up bikes
Organize the shop and help with cleaning tasks
Help plan and prepare for upcoming events, like the Bike Swap on March 29th or our Volunteer Appreciation Party in May!
Special opportunities like delivering bikes to our partners or helping community outreach
Learn about bikes and Chain Reaction while enjoying good company
No experience or RSVP is necessary!

Meet Me at the Market Group Ride
We’re teaming up with our friends at NewBo City Market! Our volunteers will lead the Meet Me at the Market group rides starting Thursday, May 8, and run all summer! These are no-drop rides, so all paces are welcomed and encouraged! A new route will be posted every week. Grab your helmet, pack some water, and let's roll! See Facebook for event details.

Community Workshop: ABCD’s of Maintenance
Air, Brakes, Chain, and Derailleur maintenance!
Join us for a hands-on, community-powered workshop where we’ll demystify the basics of keeping your bike in tip-top shape! Whether you’re a new rider or just want to feel more confident on two wheels, this is the perfect chance to learn and connect.
🛠️ What we’ll cover:
✅ A – Checking tire pressure & avoiding flats
✅ B – Adjusting & inspecting brakes
✅ C – Cleaning & caring for your chain
✅ D – Dialing in your derailleurs for smooth shifting
We highly encourage you to bring your own bike so you can learn the techniques and tips on your personal rig. We’ve got plenty of bikes to practice on, in case you need to borrow one. We’ll cover the necessary tools and techniques to keep you rolling!
Space is limited to 20 participants, so get registered!
This class is FREE to the community. If you would like to donate to Chain Reaction for attending the class, we’d suggest a $10 donation.

Volunteer Night
Looking for a fun and meaningful way to give back to the community? Join us for volunteer night!
Whether you're a seasoned bike mechanic or just someone who loves bikes and wants to help out, we welcome you to come and lend a hand.
Generally, on scrap nights we have a few projects volunteers can work on:
Take apart bikes and salvage some components for reuse
Assess, clean, and fix up bikes
Organize the shop and help with cleaning tasks
Help plan and prepare for upcoming events, like the Bike Swap on March 29th or our Volunteer Appreciation Party in May!
Special opportunities like delivering bikes to our partners or helping community outreach
Learn about bikes and Chain Reaction while enjoying good company
No experience or RSVP is necessary!

New Volunteer Orientation
Interested in volunteering? Want to learn more and take a tour of the shop? Join our New Volunteer Orientation. We’ll be covering all the ins and outs of volunteering at the shop, including the signup and scheduling process, shop roles, activities and workflow, and if you’re interested, how to quickly assess donated bikes and bike parts.
If you’d like to become a volunteer at Chain Reaction, check out the volunteer link in our bio and RSVP by emailing us at crbh.volunteer@gmail.com .