Bloomingdale Trail 5K

Naperville Trails Half Marathon & 10K is held in Wheaton, Illinois, with the start/finish at the DuPage County Forest Preserve District Headquarters and a scenic course through the Danada Forest Preserve on crushed limestone trails. Runners choose either the Half Marathon or 10K; both distances are..

Timely Nonsense is an urban ultramarathon held at a 58-acre park in Chicago, at the intersection of California and Montrose. The course features a 0.75-mile paved loop that runners complete for the 6-hour or 12-hour timed events. An aid station at the Start/Finish provides typical ultrarunning fare,..

Half Day at the Lake is a unique ultra-running event held in Evanston, Illinois, featuring 6- and 12-hour race options. The race takes place on a scenic 2-mile loop along Chicago’s north shore lakefront path, passing through Evanston’s lakefront and Northwestern University’s campus. The course is a..

Fire Zone 5k is a first-time event hosted by the Lockport Fire Foundation in Lockport, Illinois. The 5k takes place on a Forest Preserve trail, with a single full marked loop starting at the Hassert Park parking lot across from Lockport Township Fire Station Six and ending back there. Runners and wa..

The Des Plaines River Trail Races, held in Lake County, Illinois, offer a scenic and fast trail running experience with distances including a Half Marathon, Marathon (Boston Qualifier), 50K, and 50 Mile ultra. Starting and finishing at Half Day Forest Preserve, the course features a flat, wide, crus..

Palos Park Spooky Shuffle 2025 is a 5K and 10K trail run/walk held at Swallow Cliff South Forest Preserve in Palos Park, IL, organized by the Palos Park Department of Recreation & Parks in partnership with the Forest Preserves of Cook County. Runners traverse the Sag Valley Trail System on wide, unp..