Jack Bristol Lake Waramaug Ultra Races
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Event
The Jack Bristol Lake Waramaug Ultra Races take place April 26, 2026 in Kent, Connecticut at Lake Waramaug State Park. This edition is the 52nd anniversary of the event. Race distances offered are:
- 100K
- 50 Miler
- 50K
The event is part of the Mount To Coast 100K Series. Registration closes April 24 at 11:59 PM ET. Bib pickup begins one hour before each race. T-shirt sizes are not guaranteed after March 15.
Course and logistics
The course uses rolling loops on paved roads around Lake Waramaug. The start area is near the intersection of Lake Waramaug Road and Anderson Acres Road. All runners begin with a 2.2 mile out (clockwise) and return counter-clockwise at the start. Course layouts by distance:
- 50K: three 7.6 mile laps counter-clockwise, then a 1.9 mile out-and-back to the finish at the state park.
- 50 Miler: six laps around the lake, finish at the state park.
- 100K: seven laps around the lake, then a 2.3 mile out-and-back to the finish at the state park.
There are four aid stations positioned around the lake and post-race food and drinks for runners. Distances between points from the main start/finish are 1.8 miles, 1.9 miles, 1.7 miles, and 2.2 miles. Time limits are 12 hours for the 50K and 13 hours for the 50 Miler and 100K; race officials may consider conditions and safety when allowing continuations. Winners receive certificates for a pair of R1 Mount to Coast shoes; finishers receive event awards including medals and a buckle for the 100K. Visit the organization's website for the most recent information.
