The Gut Check Adventure Triathlon


Saturday, October 1, 2022

Saturday, October 1, 2022 at 08:00 AM


08:00 AM

DCR-Nickerson State Park
3488 MAIN ST
Brewster, MA, 02631-1521
Registration for this event is closed
Event Information
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 will be different — and no one knows exactly what it will be until shortly before the race. Just know that it will be an endurance workout you won’t soon forget!

This is a race for intermediate athletes. Expect cold water, steep hills and difficult cliffside running trails paved with tree roots. While there will be emergency medical support on-site, all participants race at their own risk.

Athlete's Guide:

How it will work:

Until shortly before the race, all you’ll know about this year’s Gut Check is that it will combine running, cycling, navigating and water crossing (paddleboard or swimming) in Nickerson State Park. You will present yourself at designated checkpoints along the way. Expect a finishing time of 1 to 2 hours. Whether you compete solo or with a group of your friends (2, 3 or 4 persons), the objective is to use your wits and fitness to scramble your way (including 92 steps built into a cliff) to the finish.

How should I prepare?

Prepare yourself for this event by training to be capable of trail running and biking for about two hours.  There will be no more than two swim segments, and each swim segment will be no longer than 1/4 mile. Biking elevations range from -5% to 8% grades, running elevations up to 18% grade. You can choose between swimming or paddleboarding. Bring your own, or a limited supply will be available to rent. Be prepared for a mile+ of paddling or half a mile+ of swimming. Be prepared to read and follow the supplied trail map.   There will be four race categories: solo, two-person, three-person and four-person. All members of a team must remain in close contact and finish at the same time.


Be prepared to:

Paddle 1.2 - 2 miles or Swim .5 - .6 miles

Bike (steep hills) 4 - 8 miles

Run (technical trails) 4 - 6 miles

Gear List

Road Bike

Bike Helmet

Paddle board w/ paddle or surf board

Life vest or safe-swimmer buoy

If swimming; dry bag for shoes, map etc.

Running (or trail) shoes that don't mind getting wet

We'll supply the laminated map

USA Triathlon

The swim category of this race is sanctioned but as of this date USAT does not have a way of ranking non-traditional races.


You will need at least a one-day USA Triathlon membership in order to race in this category.

Follow prompts through registration to choose a one-day ($15) or Annual ($50) Membership.


Your race is not included in USAT sanctioning so will not be required to submit or purchase a USAT membership.

Recommended Gear

Marker to be used on laminated map

Long pants, tights or leg protection

Sunglasses or hat

Bug spray



Dry bag or safe swimmer buoy with inner compartment


Race with friends or race solo. 

Racing as a team:

Each person still registers as an individual, noting the name of your team during the registration process. This avoids the hassle of one person registering the team but then needing to gather info and collect money from everybody. Team members can also decide prior to the event to "race solo," or vice versa. On race day each member of the team must go through check points and finish line together. May the fastest... and smartest... teams win!

Can teams share a paddleboard?
Yes! Up to 2 team members can be on 1 paddleboard at a time.
Field Limit
150 Athletes!
Transfer/Refund Policy
There will be no refunds , transfers or wait list.

Results are expected to be posted to the Gut Check  website and the NEEE website with in one day.

Rain Date
There is no rain date.  Race director does reserve the right to substitute a trail run for the swim or paddle if weather dictates it.

For those traveling from afar, Cape Cod is awash with hotels, motor lodges, inns, bed and breakfasts, vacation cottages and AirBnB offerings.


It is important to keep athletes, volunteers and staff safe! As guidelines shift for events of this type we will update this race's website page and post to Facebook.

The Course

Athletes will receive laminated maps that have checkpoints pre-marked before the race. You will navigate between checkpoints using the map and compass. Teams must check in at all checkpoints and the finish line together. Segments will be categorized as either a run, bike, or swim/paddle discipline. Keep in mind that you may have multiple running, biking, and swim/paddling legs that alternate throughout the race. Also, unlike a relay, 2, 3 or 4-person teams compete together the entire race.
This is a point-to-point race, there is no central transition area so plan accordingly.

The Gut Check Adventure Triathlon