The GutCheck series of adventure races are tests of mental skills as much as they are measures of endurance. Whether you race as a solo participant or form a team of two, three or four persons, you’re in for a day that you’ll remember for a long time.

Whether it’s crossing the pastoral beauty of Cape Cod in Massachusetts or the stunning ruggedness of Vermont’s green mountains, you’re running, biking and (for the Cape Cod race) crossing stretches of water by swim or by paddle. Plus: you’re navigating your way from checkpoint to checkpoint, and eventually to the finish — following a map which you received just minutes before the starting gun.

Race days in 2026 are August 15 (Stratton Mountain) and September 19 (Cape Cod). These are weekends you certainly want to add to your list of great experiences for this year. Click the links below to learn more.