Hindsight Ultra Trail Runs

Hindsight Ultra Trail Runs takes place in Dixon, Illinois, on September 26, 2026. The event offers four trail distances: a 100-mile and a 100K (62 miles) both starting at 6:30 a.m., a 25K (about 15.5 miles) at 8:00 a.m., and a 50K (31 miles) with an afternoon start at 1:00 p.m. All are run on trails in northern Illinois, and the spread of start times means the course stays busy from early morning well into the night.

The 25K is a good introduction to trail racing for runners with a half marathon in their legs. The 50K's 1:00 p.m. start is unusual: you will run into the evening and probably finish by headlamp, which makes it a useful rehearsal for anyone planning a longer night race later. The 100K and 100-mile call for prior ultra experience and a crew or drop-bag plan. Build your training around 16 to 20 weeks of steady mileage, back-to-back long runs for the longest formats, and at least one practice run in the dark.