WRC
-->
www.bikereg.com

core4 gravel

United States flag
Iowa City, Iowa, United States

calendar_today 14 Aug, 2026 – 15 Aug, 2026

directions_bike Cycling

language Official Website

sell $24.00 – $154.00

Register Now
core4 gravel

About the Event

Experience the unparalleled adventure of core4 2026, set for August 14–15 at Wilson’s Orchard in Iowa City. This fifth edition promises to exceed all expectations from its illustrious predecessors. With over 1,000 participants already gearing up for an epic weekend, you won't want to miss out on this legendary event.
Join the exhilarating ride and run challenges that cater to every level of fitness and experience. Choose your path among four distinct distances: a 20-mile adventure, a grueling 40 miles (complete with e-bike support), a more ambitious 70 miles, or an impressive 120 miles that will test even the most seasoned athletes. The Orchard Run v.2 adds new dimensions with its unique mix of 5k and 10k routes.
For those seeking to push their limits further, core4 offers professional and elite events: a USAC Youth Race over 60 miles and the prestigious Gravel Earth Series race covering an impressive 120 miles. These races promise not only challenge but also camaraderie among like-minded athletes.
The atmosphere at core4 is one of community, opportunity, and engagement. Partnerships with Iowa City Bike Library, Iowa Coalition of Off-Road Riders, Corridor Devo Junior Cycling, BIKE IOWA, the Iowa Bicycle Coalition, and Bur Oak Land Trust ensure that this event caters to a wide range of cycling enthusiasts.
Make it an unforgettable weekend by camping under the stars at Wilson’s Orchard. Whether you prefer setting up a tent, bringing your car, or pitching an RV, there's a spot for everyone. Embrace the vibe as you connect with fellow participants and enjoy the scenic trails that Iowa has to offer.
Register now before spots fill up quickly! Use the discount code CORE4LAUNCH26 until December 31 for adult registrations. Early registration is key—keep training and spread the word about this incredible event in Iowa City during August!
For more information, visit www.core4.bike or follow @core4.bike on social media to stay connected.

Races Offered

120 Mile Gravel Earth Series Pro/Elite Saturday - 120 Mile Pro/Elite Men p/b River Products Company

Aug 14, 2026

straighten

Distance — 193.1K

terrain

Type — Cycling

timer

40 days remaining

sell

$154.00

120 Mile Gravel Earth Series Pro/Elite Saturday - 120 Mile Pro/Elite Women p/b Iowa City Sports Commission

Aug 14, 2026

straighten

Distance — 193.1K

terrain

Type — Cycling

timer

40 days remaining

sell

$154.00

120 Mile Gravel Earth Series Pro/Elite Saturday - Volunteer! Keep me in the loop on how to help with core4!

Aug 14, 2026

straighten

Distance — 120 Mile Gravel Earth Series Pro/Elite Saturday - Volunteer! Keep me in the loop on how to help with core4!

terrain

Type — Cycling

timer

40 days remaining

sell

$0.00

120 Mile Gravel Earth Series Pro/Elite Saturday - Weekend Camping!

Aug 14, 2026

straighten

Distance — 120 Mile Gravel Earth Series Pro/Elite Saturday - Weekend Camping!

terrain

Type — Cycling

timer

40 days remaining

sell

$54.00

120 Mile core4 Route p/b McGrath Auto - Saturday 8am - 120 Mile Fat Bike (3.5"+ Tire) Category

Aug 14, 2026

straighten

Distance — 193.1K

terrain

Type — Cycling

timer

40 days remaining

sell

$154.00

120 Mile core4 Route p/b McGrath Auto - Saturday 8am - 120 Mile Men 39 & Under

Aug 14, 2026

straighten

Distance — 193.1K

terrain

Type — Cycling

timer

40 days remaining

sell

$154.00

120 Mile core4 Route p/b McGrath Auto - Saturday 8am - 120 Mile Men 40-49

Aug 14, 2026

straighten

Distance — 193.1K

terrain

Type — Cycling

timer

40 days remaining

sell

$154.00

120 Mile core4 Route p/b McGrath Auto - Saturday 8am - 120 Mile Men 50-59

Aug 14, 2026

straighten

Distance — 193.1K

terrain

Type — Cycling

timer

40 days remaining

sell

$154.00

120 Mile core4 Route p/b McGrath Auto - Saturday 8am - 120 Mile Men 60-69

Aug 14, 2026

straighten

Distance — 193.1K

terrain

Type — Cycling

timer

40 days remaining

sell

$154.00

120 Mile core4 Route p/b McGrath Auto - Saturday 8am - 120 Mile Men 70 & Over

Aug 14, 2026

straighten

Distance — 193.1K

terrain

Type — Cycling

timer

40 days remaining

sell

$154.00

120 Mile core4 Route p/b McGrath Auto - Saturday 8am - 120 Mile Non-Binary 39 & Under

Aug 14, 2026

straighten

Distance — 193.1K

terrain

Type — Cycling

timer

40 days remaining

sell

$154.00

120 Mile core4 Route p/b McGrath Auto - Saturday 8am - 120 Mile Non-Binary 40 - 49

Aug 14, 2026

straighten

Distance — 193.1K

terrain

Type — Cycling

timer

40 days remaining

sell

$154.00

120 Mile core4 Route p/b McGrath Auto - Saturday 8am - 120 Mile Non-Binary 50 - 59

Aug 14, 2026

straighten

Distance — 193.1K

terrain

Type — Cycling

timer

40 days remaining

sell

$154.00

120 Mile core4 Route p/b McGrath Auto - Saturday 8am - 120 Mile Non-Binary 60-69

Aug 14, 2026

straighten

Distance — 193.1K

terrain

Type — Cycling

timer

40 days remaining

sell

$154.00

120 Mile core4 Route p/b McGrath Auto - Saturday 8am - 120 Mile Non-Binary 70 & Over

Aug 14, 2026

straighten

Distance — 193.1K

terrain

Type — Cycling

timer

40 days remaining

sell

$154.00

120 Mile core4 Route p/b McGrath Auto - Saturday 8am - 120 Mile Single Speed

Aug 14, 2026

straighten

Distance — 193.1K

terrain

Type — Cycling

timer

40 days remaining

sell

$154.00

120 Mile core4 Route p/b McGrath Auto - Saturday 8am - 120 Mile Three Person Team Coed

Aug 14, 2026

straighten

Distance — 193.1K

terrain

Type — Cycling

timer

40 days remaining

sell

$154.00

120 Mile core4 Route p/b McGrath Auto - Saturday 8am - 120 Mile Three Person Team Men

Aug 14, 2026

straighten

Distance — 193.1K

terrain

Type — Cycling

timer

40 days remaining

sell

$154.00

120 Mile core4 Route p/b McGrath Auto - Saturday 8am - 120 Mile Three Person Team Women

Aug 14, 2026

straighten

Distance — 193.1K

terrain

Type — Cycling

timer

40 days remaining

sell

$154.00

120 Mile core4 Route p/b McGrath Auto - Saturday 8am - 120 Mile Women 39 & Under

Aug 14, 2026

straighten

Distance — 193.1K

terrain

Type — Cycling

timer

40 days remaining

sell

$154.00

120 Mile core4 Route p/b McGrath Auto - Saturday 8am - 120 Mile Women 40-49

Aug 14, 2026

straighten

Distance — 193.1K

terrain

Type — Cycling

timer

40 days remaining

sell

$154.00

120 Mile core4 Route p/b McGrath Auto - Saturday 8am - 120 Mile Women 50-59

Aug 14, 2026

straighten

Distance — 193.1K

terrain

Type — Cycling

timer

40 days remaining

sell

$154.00

120 Mile core4 Route p/b McGrath Auto - Saturday 8am - 120 Mile Women 60-69

Aug 14, 2026

straighten

Distance — 193.1K

terrain

Type — Cycling

timer

40 days remaining

sell

$154.00

120 Mile core4 Route p/b McGrath Auto - Saturday 8am - 120 Mile Women 70 & Over

Aug 14, 2026

straighten

Distance — 193.1K

terrain

Type — Cycling

timer

40 days remaining

sell

$154.00

120 Mile core4 Route p/b McGrath Auto - Saturday 8am - 120 Mile Youth 17 & Under

Aug 14, 2026

straighten

Distance — 193.1K

terrain

Type — Cycling

timer

40 days remaining

sell

$124.00

20 Mile core4 Route - Saturday 9am - 20 Mile core20 Ride E-Bike

Aug 14, 2026

straighten

Distance — 32.2K

terrain

Type — Cycling

timer

40 days remaining

sell

$74.00

20 Mile core4 Route - Saturday 9am - 20 Mile core4 Crew Ride

Aug 14, 2026

straighten

Distance — 32.2K

terrain

Type — Cycling

timer

40 days remaining

sell

$74.00

20 Mile core4 Route - Saturday 9am - 20 Mile core4 Crew Ride Youth 17 & Under

Aug 14, 2026

straighten

Distance — 32.2K

terrain

Type — Cycling

timer

40 days remaining

sell

$24.00

40 Mile core4 Route p/b Realand - Saturday 8am - 40 Mile core40 Ride

Aug 14, 2026

straighten

Distance — 64.4K

terrain

Type — Cycling

timer

40 days remaining

sell

$124.00

40 Mile core4 Route p/b Realand - Saturday 8am - 40 Mile core40 Ride E-Bike

Aug 14, 2026

straighten

Distance — 64.4K

terrain

Type — Cycling

timer

40 days remaining

sell

$124.00

40 Mile core4 Route p/b Realand - Saturday 8am - 40 Mile core40 Youth 17 & Under

Aug 14, 2026

straighten

Distance — 64.4K

terrain

Type — Cycling

timer

40 days remaining

sell

$44.00

60 Mile core4 USAC Junior Gravel Route p/b Panaracer - Saturday 8:30am - 60 Mile Junior Men 15-16

Aug 14, 2026

straighten

Distance — 96.6K

terrain

Type — Cycling

timer

40 days remaining

sell

$64.00

60 Mile core4 USAC Junior Gravel Route p/b Panaracer - Saturday 8:30am - 60 Mile Junior Men 17-18

Aug 14, 2026

straighten

Distance — 96.6K

terrain

Type — Cycling

timer

40 days remaining

sell

$64.00

60 Mile core4 USAC Junior Gravel Route p/b Panaracer - Saturday 8:30am - 60 Mile Junior Women 15-16

Aug 14, 2026

straighten

Distance — 96.6K

terrain

Type — Cycling

timer

40 days remaining

sell

$64.00

60 Mile core4 USAC Junior Gravel Route p/b Panaracer - Saturday 8:30am - 60 Mile Junior Women 17-18

Aug 14, 2026

straighten

Distance — 96.6K

terrain

Type — Cycling

timer

40 days remaining

sell

$64.00

60 Mile core4 USAC Junior Gravel Route p/b Panaracer - Saturday 8:30am - 60 Mile USAC License Junior Men 15-16

Aug 14, 2026

straighten

Distance — 96.6K

terrain

Type — Cycling

timer

40 days remaining

sell

$64.00

60 Mile core4 USAC Junior Gravel Route p/b Panaracer - Saturday 8:30am - 60 Mile USAC License Junior Men 17-18

Aug 14, 2026

straighten

Distance — 96.6K

terrain

Type — Cycling

timer

40 days remaining

sell

$64.00

60 Mile core4 USAC Junior Gravel Route p/b Panaracer - Saturday 8:30am - 60 Mile USAC License Junior Women 15-16

Aug 14, 2026

straighten

Distance — 96.6K

terrain

Type — Cycling

timer

40 days remaining

sell

$64.00

60 Mile core4 USAC Junior Gravel Route p/b Panaracer - Saturday 8:30am - 60 Mile USAC License Junior Women 17-18

Aug 14, 2026

straighten

Distance — 96.6K

terrain

Type — Cycling

timer

40 days remaining

sell

$64.00

70 Mile core4 Route p/b Bolton & Menk - Saturday 9am - 70 Mile Fat Bike (3.5"+ Tire) Category

Aug 14, 2026

straighten

Distance — 112.7K

terrain

Type — Cycling

timer

40 days remaining

sell

$144.00

70 Mile core4 Route p/b Bolton & Menk - Saturday 9am - 70 Mile Men 39 & Under

Aug 14, 2026

straighten

Distance — 112.7K

terrain

Type — Cycling

timer

40 days remaining

sell

$144.00

70 Mile core4 Route p/b Bolton & Menk - Saturday 9am - 70 Mile Men 40-49

Aug 14, 2026

straighten

Distance — 112.7K

terrain

Type — Cycling

timer

40 days remaining

sell

$144.00

70 Mile core4 Route p/b Bolton & Menk - Saturday 9am - 70 Mile Men 50-59

Aug 14, 2026

straighten

Distance — 112.7K

terrain

Type — Cycling

timer

40 days remaining

sell

$144.00

70 Mile core4 Route p/b Bolton & Menk - Saturday 9am - 70 Mile Men 60-69

Aug 14, 2026

straighten

Distance — 112.7K

terrain

Type — Cycling

timer

40 days remaining

sell

$144.00

70 Mile core4 Route p/b Bolton & Menk - Saturday 9am - 70 Mile Men 70 & Over

Aug 14, 2026

straighten

Distance — 112.7K

terrain

Type — Cycling

timer

40 days remaining

sell

$144.00

70 Mile core4 Route p/b Bolton & Menk - Saturday 9am - 70 Mile Non-Binary 39 & Under

Aug 14, 2026

straighten

Distance — 112.7K

terrain

Type — Cycling

timer

40 days remaining

sell

$144.00

70 Mile core4 Route p/b Bolton & Menk - Saturday 9am - 70 Mile Non-Binary 40-49

Aug 14, 2026

straighten

Distance — 112.7K

terrain

Type — Cycling

timer

40 days remaining

sell

$144.00

70 Mile core4 Route p/b Bolton & Menk - Saturday 9am - 70 Mile Non-Binary 50-59

Aug 14, 2026

straighten

Distance — 112.7K

terrain

Type — Cycling

timer

40 days remaining

sell

$144.00

70 Mile core4 Route p/b Bolton & Menk - Saturday 9am - 70 Mile Non-Binary 60-69

Aug 14, 2026

straighten

Distance — 112.7K

terrain

Type — Cycling

timer

40 days remaining

sell

$144.00

70 Mile core4 Route p/b Bolton & Menk - Saturday 9am - 70 Mile Non-Binary 70 & Over

Aug 14, 2026

straighten

Distance — 112.7K

terrain

Type — Cycling

timer

40 days remaining

sell

$144.00

70 Mile core4 Route p/b Bolton & Menk - Saturday 9am - 70 Mile Single Speed Men

Aug 14, 2026

straighten

Distance — 112.7K

terrain

Type — Cycling

timer

40 days remaining

sell

$144.00

70 Mile core4 Route p/b Bolton & Menk - Saturday 9am - 70 Mile Single Speed Women

Aug 14, 2026

straighten

Distance — 112.7K

terrain

Type — Cycling

timer

40 days remaining

sell

$144.00

70 Mile core4 Route p/b Bolton & Menk - Saturday 9am - 70 Mile Three Person Team Coed

Aug 14, 2026

straighten

Distance — 112.7K

terrain

Type — Cycling

timer

40 days remaining

sell

$144.00

70 Mile core4 Route p/b Bolton & Menk - Saturday 9am - 70 Mile Three Person Team Men

Aug 14, 2026

straighten

Distance — 112.7K

terrain

Type — Cycling

timer

40 days remaining

sell

$144.00

70 Mile core4 Route p/b Bolton & Menk - Saturday 9am - 70 Mile Three Person Team Women

Aug 14, 2026

straighten

Distance — 112.7K

terrain

Type — Cycling

timer

40 days remaining

sell

$144.00

70 Mile core4 Route p/b Bolton & Menk - Saturday 9am - 70 Mile Women 39 & Under

Aug 14, 2026

straighten

Distance — 112.7K

terrain

Type — Cycling

timer

40 days remaining

sell

$144.00

70 Mile core4 Route p/b Bolton & Menk - Saturday 9am - 70 Mile Women 40-49

Aug 14, 2026

straighten

Distance — 112.7K

terrain

Type — Cycling

timer

40 days remaining

sell

$144.00

70 Mile core4 Route p/b Bolton & Menk - Saturday 9am - 70 Mile Women 50-59

Aug 14, 2026

straighten

Distance — 112.7K

terrain

Type — Cycling

timer

40 days remaining

sell

$144.00

70 Mile core4 Route p/b Bolton & Menk - Saturday 9am - 70 Mile Women 60-69

Aug 14, 2026

straighten

Distance — 112.7K

terrain

Type — Cycling

timer

40 days remaining

sell

$144.00

70 Mile core4 Route p/b Bolton & Menk - Saturday 9am - 70 Mile Women 70 & Over

Aug 14, 2026

straighten

Distance — 112.7K

terrain

Type — Cycling

timer

40 days remaining

sell

$144.00

70 Mile core4 Route p/b Bolton & Menk - Saturday 9am - 70 Mile Youth 17 & Under

Aug 14, 2026

straighten

Distance — 112.7K

terrain

Type — Cycling

timer

40 days remaining

sell

$74.00

core4 Orchard 10k Run - Friday 6pm - Men 39 & Under 10k

Aug 14, 2026

straighten

Distance — 10K

terrain

Type — Cycling

timer

40 days remaining

sell

$54.00

core4 Orchard 10k Run - Friday 6pm - Men 40-49 10k

Aug 14, 2026

straighten

Distance — 10K

terrain

Type — Cycling

timer

40 days remaining

sell

$54.00

core4 Orchard 10k Run - Friday 6pm - Men 50-59 10k

Aug 14, 2026

straighten

Distance — 10K

terrain

Type — Cycling

timer

40 days remaining

sell

$54.00

core4 Orchard 10k Run - Friday 6pm - Men 60-69 10k

Aug 14, 2026

straighten

Distance — 10K

terrain

Type — Cycling

timer

40 days remaining

sell

$54.00

core4 Orchard 10k Run - Friday 6pm - Men 70 + Over 10k

Aug 14, 2026

straighten

Distance — 10K

terrain

Type — Cycling

timer

40 days remaining

sell

$54.00

core4 Orchard 10k Run - Friday 6pm - Women 39 & Under 10k

Aug 14, 2026

straighten

Distance — 10K

terrain

Type — Cycling

timer

40 days remaining

sell

$54.00

core4 Orchard 10k Run - Friday 6pm - Women 40-49 10k

Aug 14, 2026

straighten

Distance — 10K

terrain

Type — Cycling

timer

40 days remaining

sell

$54.00

core4 Orchard 10k Run - Friday 6pm - Women 50-59 10k

Aug 14, 2026

straighten

Distance — 10K

terrain

Type — Cycling

timer

40 days remaining

sell

$54.00

core4 Orchard 10k Run - Friday 6pm - Women 60-69 10k

Aug 14, 2026

straighten

Distance — 10K

terrain

Type — Cycling

timer

40 days remaining

sell

$54.00

core4 Orchard 10k Run - Friday 6pm - Women 70 & Over 10k

Aug 14, 2026

straighten

Distance — 10K

terrain

Type — Cycling

timer

40 days remaining

sell

$54.00

core4 Orchard 10k Run - Friday 6pm - core4 Orchard 10k Run Youth 17 & Under

Aug 14, 2026

straighten

Distance — 10K

terrain

Type — Cycling

timer

40 days remaining

sell

$34.00

core4 Orchard 5k Run - Friday 6pm - core4 Orchard 5k Run All

Aug 14, 2026

straighten

Distance — 5K

terrain

Type — Cycling

timer

40 days remaining

sell

$44.00

core4 Orchard 5k Run - Friday 6pm - core4 Orchard 5k Run Youth 17 & Under

Aug 14, 2026

straighten

Distance — 5K

terrain

Type — Cycling

timer

40 days remaining

sell

$24.00

Weather History

These values represent the 3-year monthly averages for August in Iowa City.

thermostat Temperature
18.0° / 27.5°
wb_sunny Feels like
18.1° / 28.1°
light_mode Avg sunshine hours
11h 37m
water_drop Avg rainfall
2.3 mm
ac_unit Avg snowfall
—
air Avg wind speed
11.1 km/h (Light breeze)
opacity Sweat loss rate
High
terrain Course conditions
Hard and dry surface
sunny Max UV Index
High (7.0)
humidity_mid Humidity
75.5%
wb_twilight Sunrise
06:15
nightlight Sunset
20:03

About Iowa City

Learn more about the host city, Iowa City.

Scenic view of

Hip and urban, Iowa City is a prominent college town primarily known as the home of the University of Iowa. Along with its adjacent suburb of Coralville, just to the west. Iowa City sits at the center of a metro area home to 171,000 people (2020) in the I-380 Corridor region of Eastern Iowa.

Read more launch

Hotels & Places to Stay

Runner Reviews

Read what other athletes have to say about their experience at the core4 gravel.

No reviews yet

Be the first to share your experience with the community!

Nearby Races

Explore other exciting events happening in this same region.

Lake Macbride Trail Races

Lake Macbride Trail Races

location_on Solon, Iowa, US

calendar_today Jul 18, 2026

50K
Prairie Dairy 5k

Prairie Dairy 5k

location_on Oxford, Iowa, US

calendar_today Aug 01, 2026

5K
Muscatine Triathlon | Presented by Sqwincher

Muscatine Triathlon | Presented by Sqwincher

location_on Muscatine, Iowa, US

calendar_today Aug 01, 2026

Other
Watermelon Stampede - 49th Annual

Watermelon Stampede - 49th Annual

location_on Muscatine, Iowa, US

calendar_today Aug 15, 2026

Other 5K 10K

Recommended for You

Hand-picked events we think you’ll love.

2026 Heartland Series - Day 5 (IA)

Jul 15, 2026

2026 Heartland Series - Day 5 (IA)

World's Best Marathon & Half Series! No Time Limits Great Food Award-Winning Medals Loony Community! We RUN this countr…

Read more
2026 Heartland Series - Day 4 (IL)

Jul 14, 2026

2026 Heartland Series - Day 4 (IL)

World's Best Marathon & Half Series! No Time Limits Great Food Award-Winning Medals Loony Community! We RUN this countr…

Read more
Biking with Beanzie

Jul 12, 2026

Biking with Beanzie

Biking with Beanzie (BWB) is a recreational ride presented by Kiwanis Club of Kishwaukee-DeKalb (IL) and sponsored by n…

Read more
2026 SKECHERS Wicked Wine Run Madison

Sep 12, 2026

2026 SKECHERS Wicked Wine Run Madison

Whether you’re a seasoned runner or just love to walk and take in the scenery, SKECHERS Wicked Wine Run is for you! Eac…

Read more

Get race deals & updates

Subscribe to our newsletter for curated race picks and discounts.