Jack Bristol Lake Waramaug Ultra Races

Kent, United States • 26 Apr 2026

The Jack Bristol Lake Waramaug Ultra Races, held in Kent, Connecticut, is a historic ultra running event featuring 100K, 50-mile, and 50K distances. The course consists of rolling loops primarily on flat, paved roads around scenic Lake Waramaug, known for personal record performances. Runners enjoy well-stocked aid stations and post-race food. The event offers unique swag including custom belt buckles for 100K finishers and medals for 50-mile and 50K finishers. Part of the Mount To Coast 100K Series, it celebrates over 50 years of tradition as the oldest 100K race in the U.S., fostering a friendly, competitive atmosphere with awards and special gear for top finishers. 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.
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