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Adventure Triathlon - Participant - Swim

Brewster, Massachusetts, United States

calendar_today 19 Sep, 2026

sell $160.00

About the Event

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!

Races Offered

Adventure Triathlon - Participant - Swim

Sep 19, 2026

straighten

Distance — Adventure Triathlon - Participant - Swim

terrain

Type — Multisports

timer

52 days remaining

sell

$160.00

Weather History

These values represent the 3-year monthly averages for September in Brewster.

thermostat Temperature

16.7° / 20.8°

wb_sunny Feels like

15.0° / 20.1°

light_mode Avg sunshine hours

9h 2m

water_drop Avg rainfall

3.7 mm

ac_unit Avg snowfall

—

air Avg wind speed

15.7 km/h (Gentle breeze)

opacity Sweat loss rate

Moderate

terrain Course conditions

Firm and slightly soft

sunny Max UV Index

Moderate (5.0)

humidity_mid Humidity

82.0%

wb_twilight Sunrise

06:21

nightlight Sunset

18:48

About 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.