Bimblers Bluff 50k

Guilford, United States • 19 Oct 2025

The Bimblers Bluff 50K is an off-road ultramarathon held in southern Connecticut, starting at Guilford Lakes School. The course traverses several interconnected woodland preserves, featuring rolling forest roads and single-track trails that can be extremely rocky. Unlike many ultras, the route does not require multiple loops, offering a unique adventure and challenge.

It demands strong fitness and mental stamina, recommended for runners with prior marathon experience. The event supports local land conservation efforts, with all proceeds donated to related charities. Participants receive a goodie bag and finisher awards, while volunteers can earn credit hours for other ultra events. Visit the organization's website for the most recent information.

Race information

50 km
50k
Visit the organization's website for the most recent information.
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