Many On The Genny

Mount Morris, United States • 20 Jun 2026

Many On The Genny is a 45-mile all-trail ultramarathon in Castile, New York, set inside Letchworth State Park’s famed gorge. The course runs on both sides of the gorge, featuring single-track, fields, footbridges, and bridle paths, delivering stunning vistas and challenging climbs. The event preserves a grassroots, old-school ultrarunning vibe and emphasizes self-sufficiency. Five fully stocked aid stations plus one water stop are spread along the distance, with longer gaps between some segments in remote sections. It celebrates rugged trail scenery, a supportive community, and the shared spirit of endurance running—a classic, self-supported challenge for serious trail runners. Visit the organization's website for the most recent information.

Race information

45 mi
45 Miler
Visit the organization's website for the most recent information.
Trail runs nearby

Glen Iris 5K & 10K Trail Run/Walk takes place in Letchworth State Park, Castile, NY, known as the Grand Canyon of the East. Both woodland-trail courses start and finish near Trout Pond, offering challenging routes with forest views, creeks, bridges, and wildlife. The event provides a social, scenic..

Ontario Summit Trail Races, celebrating its 10th anniversary, take place at Ontario County Park at Gannett Hill in Naples, NY. The event offers a Half Marathon (13.1 miles, one-way, mostly single-track around the summit) and a 5 Mile race that stays within the park with gentler elevation. Expect roc..

The ROCovery Fitness Annual Run/Walk & X-Challenge is held in Henrietta, NY, at Mendon Ponds Park. This event celebrates fitness and recovery during National Recovery Awareness Month and supports individuals recovering from alcohol and substance use disorders. Participants can choose from multiple o..

Broken Cabin 10k is a 10-kilometer trail race held near Batavia, New York. In its second year, the event takes place on a privately owned trail system made possible by generous landowners. The course blends challenging segments with scenic beauty, and is designed for runners of all levels, offering..

The Unlimited Breadsticks Trail Race Half Marathon is a 13-mile trail running event held in Victor, New York, starting at Parkview Fairways and finishing near Valentown. This scenic race offers participants a unique trail experience with aid stations sponsored by Tailwind and encourages runners to b..

Rob's Trail Fest is a fall trail-running event in Hemlock, NY, at the south end of Canadice Lake, on Oct 11, 2025. It features three distances: Marathon, 15K, and 5K. The course mixes single-track, gravel, and a small amount of paved surfaces, including two 800-foot climbs on the marathon and a fast..