Jack Bristol Lake Waramaug Ultra Races

Kent, United States • 26 Apr 2026

The Jack Bristol Lake Waramaug Ultra Races, taking place on April 27, 2025, is a celebrated ultra-running event in Connecticut, marking its 51st anniversary. This historic race features three distances: 100K, 50 miles, and 50K, all set around the scenic Lake Waramaug. Participants can expect well-stocked aid stations, post-race food, and unique finisher's medals and T-shirts. The event is part of the Mount to Coast 100K Series, with awards for top finishers. Known for its flat, fast course, the race encourages runners of all levels to join in the tradition and camaraderie of ultra-running. Visit the organization's website for the most recent information.

Race information

100 km
100k
50 mi
50 Miler
50 km
50k
Visit the organization's website for the most recent information.
Trail runs nearby

The Mine Hill Half Marathon, held in Roxbury, Connecticut, is known as the toughest road half marathon in the state. Starting and finishing at the scenic Mine Hill Distillery, the challenging 13.1-mile course features a mix of paved and dirt roads with significant elevation changes, including a stee..

The Peach Hill "Run For the Hill of It" 5K is a cross-country running and walking event taking place at Peach Hill Park in Poughkeepsie, NY. Participants will traverse scenic trails, reaching the highest point in the town for stunning views. Open to all ages, the event encourages both runners and wa..

The IronHike Endurance Series - Spring 2025 takes place at Mohawk Mountain Ski Area in Cornwall, Connecticut. This multi-day event, held over four days in June, offers a unique blend of hiking, trail running, and camping challenges. Participants can compete solo, with a trail buddy, or as a trail fa..

The Flanders Field & Forest 5K is an annual trail run and walk held at Flanders’ Van Vleck Farm & Nature Sanctuary in Woodbury. Covering 3.1 miles of scenic trails, the event welcomes participants of all ages and fitness levels. It is officially timed and features divisions for different age groups,..

The Norbrook Farm Brewery Trail Festival, held at Norbrook Farm Brewery in Colebrook, Connecticut, is a vibrant all-day event featuring trail running and mountain biking. Participants can choose from a 4-hour run, 10K, 5K, run/bike duathlon, and various mountain bike races on challenging 5-mile loop..

The Red Wing Trail Challenge is an annual trail running event held in Lagrangeville, NY, organized by Conquer The World Endurance. Participants can choose between a 60K race with approximately 6,600 feet of elevation gain or a 15K race with about 1,650 feet of gain. The course features a scenic 15K..