Clinton Lake Ultra

MAR
28
2026
Run scenic single track loops around Clinton Lake near DeWitt, IL through forests, hills and meadows with a bridge connecting the course. Choose the 30 Miler or 10 Mile, enjoy post race food and a long sleeved finisher item.
Sat 28 Mar 2026
30 miles 10 miles

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Event details

The Clinton Lake Ultra is held at Clinton Lake State Recreation Area near DeWitt, IL. The event offers the following distances:

  • 30 Miler
  • 10 Mile

Registration closes on Sat, Mar 21 at 11:59 PM CT. The shirt deadline is 11:59 PM on March 1; registrants after that date are not guaranteed a race sweatshirt. This is a no-chip-timing event. The race is part of the 50K MashUp; 50K MashUp participants receive a special recognition item at packet pickup. Top three male and female finishers receive awards. All participants receive a long-sleeved CLINTON item and a finisher item. Weather-appropriate post-race food will be provided.

Course and race rules

The course starts at the North Fork Trailhead parking lot (boat ramp). The route consists of three loops of approximately 10 miles each through forest, hills, and meadows. The trail is almost entirely single-track with a short section on road and a bridge that connects the loop around the lake. Each loop has about 1,500 feet of elevation gain. There are two fully stocked aid stations on each loop.

Volunteer participation is mandatory; organizers expect volunteers to either assist at races or perform trail work, and a form will be provided near race day for reporting volunteer activity. Runners are asked to carry their own drink vessel; there are no cups at aid stations. Pacers and early starts are not permitted. Visit the organization's website for the most recent information.

30 mi
30 Miler
10 mi
10 Mile