Name: Colesburg Back 40
Start: 2026-09-06
End: 2026-09-06
Location: Colesburg

About the Event

Experience the 33rd edition of this historic gravel race, celebrated as the oldest continuously running event in the Midwest. This year, the organizers have opted for an old-school approach with a shotgun start and just one route: the challenging 40-mile journey through Iowa's picturesque driftless region.
The course promises breathtaking views that will captivate runners from mile one to the last stretch. Expect approximately 1,000 feet of elevation gain every ten miles, but you'll be too busy admiring the countryside to notice. The route details will be released before race day; while there may be some markings along the way, relying solely on them isn't advisable. Download the RideWithGPS file for a more accurate navigation experience.
A key aid station awaits around mile 20, but remember that outside assistance is prohibited. This checkpoint serves as both an aid and mandatory check point, ensuring all participants stay on track. Registration and bib pickup times are yet to be announced.
What makes this year special? The answer lies in the surprises awaiting you come race day. And yes, there will be music and a celebratory awards ceremony to cap off your efforts!
Ensure you bring along essential gear: helmets are mandatory for safety. Follow the rules—no support vehicles or outside help allowed; only volunteers and racers have access to aid stations.
In Chuck Norris' words (or perhaps his fictional ones), don't forget to bring all the legs there are, as this race is about your own determination and endurance through nature's beauty.

Races Offered

Fun ride including E-Bikes

Sep 06, 2026

straighten

Distance — 32.2K

terrain

Type — Cycling

timer

18 days remaining

sell

$40.00

Open Fat Bike 40 - Men's

Sep 06, 2026

straighten

Distance — 64.4K

terrain

Type — Cycling

timer

18 days remaining

sell

$60.00

Open Fat Bike 40 - Women's

Sep 06, 2026

straighten

Distance — 64.4K

terrain

Type — Cycling

timer

18 days remaining

sell

$60.00

Open Men's 40

Sep 06, 2026

straighten

Distance — 64.4K

terrain

Type — Cycling

timer

18 days remaining

sell

$60.00

Open Men's 40 - Single Speed

Sep 06, 2026

straighten

Distance — 64.4K

terrain

Type — Cycling

timer

18 days remaining

sell

$60.00

Open Tandem 40

Sep 06, 2026

straighten

Distance — 64.4K

terrain

Type — Cycling

timer

18 days remaining

sell

$100.00

Open Women's 40

Sep 06, 2026

straighten

Distance — 64.4K

terrain

Type — Cycling

timer

18 days remaining

sell

$60.00

Open Women's 40 - Single Speed

Sep 06, 2026

straighten

Distance — 64.4K

terrain

Type — Cycling

timer

18 days remaining

sell

$60.00

Weather History

These values represent the 3-year monthly averages for September in Colesburg.

thermostat Temperature

14.5° / 24.5°

wb_sunny Feels like

12.9° / 23.4°

light_mode Avg sunshine hours

10h 47m

water_drop Avg rainfall

1.9 mm

ac_unit Avg snowfall

—

air Avg wind speed

11.6 km/h (Light breeze)

opacity Sweat loss rate

Moderate

terrain Course conditions

Firm and slightly soft

sunny Max UV Index

Moderate (5.0)

humidity_mid Humidity

69.4%

wb_twilight Sunrise

06:45

nightlight Sunset

19:13

About Colesburg

Learn more about the host city, Colesburg.

Colesburg is a city in Delaware County, Iowa, United States. The population was 386 at the time of the 2020 census.

Hotels & Places to Stay

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Colesburg Back 40

About the Event

Races Offered

Fun ride including E-Bikes

Open Fat Bike 40 - Men's

Open Fat Bike 40 - Women's

Open Men's 40

Open Men's 40 - Single Speed

Open Tandem 40

Open Women's 40

Open Women's 40 - Single Speed

Weather History

About Colesburg

Hotels & Places to Stay

Runner Reviews

No reviews yet

Nearby Races

Hero Hustle Sprint Triathlon & Duathlon

Ewalu's Grotto Gallop Trail 5k and Kids Color Run

Dubuque Benefit Classic - 48th Annual

Watermelon Days 5K Run/Walk

Recommended for You

2026 SKECHERS Wicked Wine Run Madison

2026 SKECHERS Wicked Wine Run Chicago

Divas Chicago Half Marathon & 5k

City of the Sun 5K Trail Run 2026

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