Earth Day 50K

Lace up your trail shoes for the Earth Day 50K, a captivating trail running experience set for April 18, 2026, in the scenic Veteran Acres and Sternes Woods of Crystal Lake, IL. This annual event, organized by the runner-focused Ornery Mule Racing, offers distances for every level of runner, including a challenging 50K ultra, a substantial 15-mile race, and an accessible 5-mile option. The course is renowned for its winding single track, rolling hills, and a diverse landscape featuring blossoming spring flowers, open prairie, and serene pine forest, providing a beautiful backdrop to your run. Runners tackle a 5 to 5.2-mile loop, accumulating approximately 500 feet of elevation per circuit on terrain that is mostly tree-covered but includes roots and some challenging sections that may require walking.

The Earth Day 50K is celebrated not just for its engaging course, but also for its commitment to environmental sustainability, aiming to be a "landfill-free" event by encouraging participants to bring their own water bottles. Runners consistently praise the supportive and friendly atmosphere, bolstered by well-stocked aid stations. The main aid station at the start/finish line is a highlight, offering not only typical ultra fare like PB&J, sports drinks, and chips, but also homemade goodies such as cookies, cakes, chili, and taco soup to keep you fueled. You can also leave a drop bag at the start/finish to access personalized supplies.

With typical race day conditions seeing highs around 58°F and lows near 38°F, and only a 16% chance of precipitation, you can expect crisp spring weather perfect for hitting the trails. This race is lauded as an excellent choice for both seasoned ultrarunners and those new to the distance, offering a memorable challenge and an opportunity to celebrate Earth Day amidst nature's beauty. All races begin at 8 AM from the main parking lot at Veteran Acres, starting in the ball field and circling a pond to help runners spread out before hitting the single track.