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core4 gravel

August 15 2026
Iowa City IA
Unconfirmed
 
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Distances: 25, 50, 100 miles
Difficulty: Moderate terrain with rolling short steep hills or moderate, sustained climbs

The greatest gravel event this side of the galaxy! That just happens to also include singletrack, pavement & b-roads.  25, 50, and 100 mile options. All the cats. All the peeps included. New this year: Official age cats!

Community. Opportunity. Recreation. Engagement. Because last year was insane. And 2023 is going to be even rowdier. To get all bodies on bikes thanks to our local bike advocacy partnerships: Iowa City Bike Library, Iowa Coalition of Off Road Riders, Neighborhood Centers of Johnson County, Corridor Devo Junior Cycling Team.

Start training NOW. And tell everyone you know why you are coming to Iowa City in August. Stay tuned for official training events next spring! Follow along at @core4.bike to get in on all the behind the scenes action. 

core4 gravel

 
Start Located At: 4823 Dingleberry Rd NE, Iowa City, IA 52240
 
 
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gravelearthseries
Aug 24 2025 - NEWS: Matt Beers and Rosa Klöser Triumph at 2025 Lauf Gravel Worlds in Nebraska
Jul 22 2025 - NEWS: Rosa Klöser and Magnus Bak Klaris Dominate The Rift Gravel 2025 with Solo Victories
May 14 2025 - NEWS: Gravel Earth Series Documentary: The Traka, Beyond the Grit
May 03 2025 - NEWS: Migon and Kongstad Take Victory at the 2025 Traka 360
Apr 24 2025 - NEWS: Ferreira And Aguirre Triumph In A Legendary Tierra De Campos Weekend
Apr 03 2025 - NEWS: Aguirre and Perry at Gravel Earth Series The Hills in Italy
Feb 16 2025 - NEWS: Santa Vall Proclaims Petr Vakoc And Ashleigh Moolman Leaders Of The Gravel Earth Series
Feb 16 2025 - NEWS: Santa Vall Proclaims Petr Vakoc And Ashleigh Moolman Leaders Of The Gravel Earth Series
Jan 04 2025 - NEWS: Gravel Earth Series breaks down barriers to become the World’s Leading Gravel Race Circuit
Jul 02 2024 - NEWS: Lejuene and Drechou take Victory at Sold-Out 2024 Oregon Trail Gravel
Sep 13 2025 - EVENT: Gravel Desert Monegros
Sep 13 2025 - EVENT: Saga Gravel
Sep 28 2025 - EVENT: Ranxo Gravel
Mar 06 2026 - EVENT: Giro Pio
Jun 06 2026 - EVENT: Festivus of Gravel
Jun 16 2026 - EVENT: Migration Gravel Race
Jul 18 2026 - EVENT: The Rift
Aug 19 2026 - EVENT: Gravel Worlds
Sep 12 2026 - EVENT: Rebecca's Private Idaho
 
gravelearthseries
Aug 24 2025 - NEWS: Matt Beers and Rosa Klöser Triumph at 2025 Lauf Gravel Worlds in Nebraska
Jul 22 2025 - NEWS: Rosa Klöser and Magnus Bak Klaris Dominate The Rift Gravel 2025 with Solo Victories
May 14 2025 - NEWS: Gravel Earth Series Documentary: The Traka, Beyond the Grit
May 03 2025 - NEWS: Migon and Kongstad Take Victory at the 2025 Traka 360
Apr 24 2025 - NEWS: Ferreira And Aguirre Triumph In A Legendary Tierra De Campos Weekend
Apr 03 2025 - NEWS: Aguirre and Perry at Gravel Earth Series The Hills in Italy
Feb 16 2025 - NEWS: Santa Vall Proclaims Petr Vakoc And Ashleigh Moolman Leaders Of The Gravel Earth Series
Feb 16 2025 - NEWS: Santa Vall Proclaims Petr Vakoc And Ashleigh Moolman Leaders Of The Gravel Earth Series
Jan 04 2025 - NEWS: Gravel Earth Series breaks down barriers to become the World’s Leading Gravel Race Circuit
Jul 02 2024 - NEWS: Lejuene and Drechou take Victory at Sold-Out 2024 Oregon Trail Gravel
Sep 13 2025 - EVENT: Gravel Desert Monegros
Sep 13 2025 - EVENT: Saga Gravel
Sep 28 2025 - EVENT: Ranxo Gravel
Mar 06 2026 - EVENT: Giro Pio
Jun 06 2026 - EVENT: Festivus of Gravel
Jun 16 2026 - EVENT: Migration Gravel Race
Jul 18 2026 - EVENT: The Rift
Aug 19 2026 - EVENT: Gravel Worlds
Sep 12 2026 - EVENT: Rebecca's Private Idaho