Jack Bristol Lake Waramaug Ultra Races

Jack Bristol Lake Waramaug Ultra Races - 52nd Anniversary

The Jack Bristol Lake Waramaug Ultra Races are the oldest ultras in Connecticut and many other places. It is the oldest 100K in the United States.

Date: April 26, 2026

Location: Lake Waramaug Rd, Kent, CT

Races:

• 100K
• 50 Mile
• 50K

Course: Rolling loops, primarily flat on paved roads around Lake Waramaug. Most people achieve personal records on this course.

Aid Stations: Four well-stocked aid stations around the lake, with post-race food and drinks.

Time Limits: 50K (12 hours), 50 Mile & 100K (13 hours). Extensions may be considered based on factors including safety and probable finish time.

Swag: Hi-tech t-shirt, medal (50K and 50-mile finishers), buckle (100K finishers), and post-race food. Mount to Coast will also provide a special medal to all finishers.

Start Times:

• 100K: 6:30 AM
• 50 Miler: 6:30 AM
• 50K: 7:30 AM