There are enough triathlons and duathlons out there. How about a true test of your late summer conditioning? After five successful years as one of the most difficult sprint triathlons in the world, The Gut Check was reconfigured in 2019 as a point-to-point adventure race within Cape Cod’s 2000-acre DCR Nickerson State Park. Each year, the course is different — and no one knows exactly what it will be until shortly before the race! The 2025 race filled to capacity in advance of Race Day. Don’t miss out in 2026!
Sep 19, 2026
Distance — Adventure Triathlon - Participant - Swim
Type — Multisports
5 days remaining
$160.00
These values represent the 3-year monthly averages for September in Brewster.
Learn more about the host city, Brewster.
Brewster is in Massachusetts on Cape Cod. Brewster, known as a favorite home of sea captains, is a charming bayside town. It quieter than many Cape towns and is home to Nickerson State park, a preserve of 400 acres of trails.
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