Ondessonk Trail Race

APR

11

2026

Run Camp Ondessonk's scenic trails, canyons and lakeside paths at the 16th annual Ondessonk Trail Races on April 11, 2026. New this year are a half marathon and a family one mile fun run, plus 10k and 5k race options.

Sat 11 Apr 2026

Ozark, Illinois

Registration

Half Marathon 10 kilometers 5 kilometers

Always double-check with the organizer's website! This page may contain affiliate links.

Ondessonk Trail Races

The Ondessonk Trail Races take place on April 11, 2026, at Camp Ondessonk, 3760 Ondessonk Rd, Ozark, IL 62972. This is the 16th annual edition. The event includes runs that use Camp Ondessonk trails, forests, canyons, pastures, and a route around Lake Echon. Two races are new for 2026: a half marathon and a one-mile fun run for families.

Events and registration

Half Marathon
Manchester 10k
5k Run
One-Mile Fun Run

Early bird registration prices apply through March 13, 2026. Listed fees are: half marathon $50 early bird, $75 after; Manchester 10k $40 early bird, $50 after; 5k $30 early bird, $35 after; one-mile fun run $20. The one-mile fun run registration closes April 10, 2026. All events include a race T-shirt; entrants who register after March 18 are not guaranteed their requested shirt size. The 5k, Manchester 10k, and half marathon award trophies to top male and top female finishers. Visit the organization's website for the most recent information.

Half Marathon

10 km

Manchester 10k

5 km

5k Run

One-Mile Fun Run