Prepare to test your limits at the CMAR Trail Races, a formidable challenge set for July 17, 2026, in Chillicothe, IL. Offering distances including a Half Marathon, 50K, 50M, and the epic 100M, this event is more than just a race; it's a full weekend experience steeped in gritty climbs and deep trail community spirit within the picturesque Illinois River Valley. Held at Camp Wokanda, a beautiful 316-acre woodland, typical race day conditions in mid-July feature highs around 87°F and lows of 67°F, with a 13% chance of precipitation, ensuring a true test of endurance against the heart of a Midwest summer.

The course, aptly nicknamed "Cry Me A River," is known for being relentlessly challenging, despite Illinois's reputation for flat terrain. Runners will navigate predominantly single-track trails that feature steep, tight switchbacks, arduous vertical scrambles, and punishing descents along wooded ridges and river bluffs, complete with bridges and stairs. Expect significant elevation gains: the Half Marathon boasts 2,815 feet, the 50K nearly 6,500 feet, the 50M around 9,300 feet, and the 100M demands an impressive 18,500 feet of climbing. Aid stations are strategically placed, ensuring runners are never more than 6 miles apart, well-stocked with standard ultra-fare and hot food items, though participants should bring their own reusable cups for this cupless event.

The CMAR Trail Races are praised for their exceptional organization, clear communication, and well-marked routes, even at night. Pacers are permitted for the 100K after 20 miles and for the 100M after 50 miles, fostering a strong sense of camaraderie. Finishers of the 100-mile distance earn a coveted belt buckle, a testament to their perseverance against the challenging terrain and the often scorching summer heat. With camping and hot showers available at the start/finish in Camp Wokanda, runners are invited to immerse themselves in the vibrant ultrarunning community and push their limits on these unforgettable trails.