core4.bike

core4 is Iowa’s premier run + ride experience: a celebration of community, opportunity, recreation, and engagement on all 4 surfaces. gravel. pavement. b-roads.

singletrack.

09/09/2026

Which way?! The spillway.
core4 2027 is coming...

08/26/2026

THANK YOU! What a year. To ALL the volunteers, sponsors, supporting agencies, bike shops, athletes, friends, family and partners. Here’s to those who show up and those behind the scenes. Together we make this community event a reality. Thank you immensely for joining year after year. The best part is yet to come…

08/23/2026

Look like a baddie in your new core4 threads. Last call to snag your Pactimo x core4 kit! Store closes Wed, Aug 26!

08/21/2026

This team! Kudos to the core4 wizards. The magic was in full display this year! We learned that despite the weather, with good people + community, anything is possible. Thanks for trusting us through all the pivots! More gratitude to come!

Nate Kullbom Nathan Kullbom
Bridget Brown Bridget Brown
Rachael Roewe {made} community
Pol Jufré JUFRÉ FILMS
Alex Buhmeyer core4

08/20/2026

Everyone gets celebrated at core4. EVERYONE. And this years DFL was no exception. Logan Anderson from South Dakota finished the 120 mile distance in 10 hours and 41 minutes rolling in 6:41 PM! Huge congrats to finishing an epic ride!!

08/18/2026

If you missed the merch tent… we got a few pieces up on the site. Free local drops! Also the pactimo_custom kit store closes Sunday.

08/16/2026

Photobooth + Podium pics are up! Link in bio.

📸ar_chez

Address

Iowa City, IA

Website

http://core4.bike/

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