1 mountain biking event in Iowa City, Iowa

core4 5th edition… NO SURFACE UNTOUCHED experience at core4 2026 August 14–15, 2026 | Wilson’s Orchard, Iowa City

core4 2026 brings the magic of the first four years and then some. Iowa’s finest gravel awaits you and 1,000+ riders and runners ready for one helluva weekend! Last year was over the top. 2026 will be legendary.

WHO: EVERYONE. REGISTER now to snag your spot with the launch rate. USE DISCOUNT CODE: CORE4LAUNCH26 until Dec 31 for adult registrations!

WHAT: The greatest ride + run weekend this side of the galaxy! Plus a Friday Night Fiesta!

Choose your challenge: 20, 40, 70, or 120 miles - with all the cats, including e-bike for the 40 mile! Orchard Run v.2 with new distances 5k + 10k! Pro/Elite Events: 60-Mile USAC Youth Race + 120-Mile Gravel Earth Series Race

WHEN: Friday–Saturday, August 14–15, 2026 Make it a weekend! Camp under the orchard — tent, car, or RV — and soak up the vibes.

WHY: core = Community. Opportunity. Recreation. Engagement. We’re getting all bodies on bikes through partnerships with: Iowa City Bike Library • Iowa Coalition of Off-Road Riders • Corridor Devo Junior Cycling • BIKE IOWA • Iowa Bicycle Coalition • Bur Oak Land Trust

HOW: Register early. Keep training. If you stay ready, you don’t have to get ready. Spread the word: tell everyone why you’re coming to Iowa City in August!

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CONNECT: www.core4.bike @core4.bike