The Hennepin Hundred

OCT
3-4
2026
A point to point trail ultramarathon along the Hennepin Canal State Trail in Illinois, with 100 mile, 50 mile, 50K and a 100 mile relay.
3-4 Oct 2026
100 miles 50 miles 50 kilometers

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The Hennepin Hundred

The Hennepin Hundred is Illinois' only point to point, all trail ultramarathon held on the first full weekend of October. The race runs along the Hennepin Canal State Trail from Sterling and Rock Falls to Colona, Illinois, following a multi-use trail that crosses historic locks and lift bridges and passes cornfields, farms and small towns in northwest Illinois.

The event offers multiple distance options:

  • 100 mile solo
  • 50 mile solo
  • 50k solo
  • 100 mile relay

The 50 mile and 100 mile courses are described as flat and fast and take place entirely on the Hennepin Canal State Trail, Illinois' longest multi-use trail. The race is supported by roughly 150 volunteers, many of whom are experienced ultrarunners, and includes staffed aid stations. It has been a Western States qualifying race since 2019. A $750 prize is offered for breaking the 100 mile course record in the male and female categories.

The course includes nighttime running where the dark skies provide visible stars. Race information pages cover rules, aid stations, relay teams, lodging and logistics for participants. Visit the organization's website for the most recent information.

100 mi
100-Mile Solo
100 mi
100 Mile Relay
50 mi
50-Mile Solo
50 km
50k Solo

Events nearby

Experience a grassroots trail event in Dixon featuring loop-based distances from 8 miles to a 100 miler on a mix of singletrack and meadow paths.
The Yeti Winter Trail Series is a four month challenge in Dixon featuring monthly races that progress from 5k to 20k across diverse winter terrain.
Test your endurance at Lowell Park with a series of timed trail challenges featuring an alternating loop course and manual lap tracking through the Illinois woods.
Night trail races in Dixon, IL on a ~5-mile loop with 5, 10, 15 mile options and a 3-person relay, one aid station, participant tee, and awards.
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