Mad Trapper Relentless 50K

OCT
3
2026
Test your endurance on technical singletrack in the Gatineau Hills with distances ranging from 3 km to a 50 km ultra. This grassroots event features peak fall scenery and a welcoming atmosphere with no cutoff times.
Sat 3 Oct 2026
50 kilometers 30 kilometers Half Marathon 10 kilometers 5 kilometers

Always double-check with the organizer's website! This page may contain affiliate links.

Mad Trapper Relentless

Mad Trapper Relentless is a fall ultra and trail race held at "The Ark" in Denholm, Quebec, located in the Gatineau Hills north of Ottawa. The event takes place on a privately maintained 164-acre trail network featuring technical singletrack with roots, rocks, and sustained elevation changes.

Participants can choose from a variety of distances:

  • 3 km and 5 km: Short loops featuring a mix of technical singletrack and some doubletrack.
  • 10 km: A single loop that includes a climb to the highest point of the property overlooking a private lake.
  • 21 km: Two laps of the 10.5 km trail circuit, totaling approximately 720 m of elevation gain.
  • 30 km: A hybrid course consisting of an 18 km gravel road loop followed by one 11 km singletrack forest loop.
  • 50 km: An ultra-distance event starting with an 18 km gravel road prologue, followed by three loops of the 10.5 km trail circuit, with a total elevation gain of 1,523 m.

The 21 km, 30 km, and 50 km distances are officially recognized on the UTMB Index. There are no cutoff times for any of the races. Runners for the longer distances pass through the main lodge area to access personal gear and the aid table. The event concludes with a post-race BBQ for participants. Visit the organization's website for the most recent information.

50 km
The 50k Ultra
30 km
30k Hybrid
Half Marathon
21k of Insanity
10 km
10k Crazed Course
5 km
5k Mad Course
3k Try a Trail