Mad Trapper Relentless 50K

Brennan's Hill, Canada • 3 Oct 2026

Mad Trapper Relentless - The Ark, Denholm, QC

Mad Trapper Relentless takes place on a privately maintained trail network at The Ark in Denholm, Quebec, in the Gatineau Hills north of Ottawa. The event offers multiple distances on technical terrain that includes rocks, roots, climbs, descents, tight turns and gravel road sections.

Distances offered:

  • 3K
  • 5K
  • 10K
  • 21K (two 10.5K loops, about 720 m total elevation)
  • 30K (hybrid: roughly 18K gravel road and 11K technical trail, about 819 m gain)
  • 50K (18K gravel prologue then three 10.5K trail loops, about 1 523 m gain)

Courses are clearly marked with different coloured flags by distance. There are no cutoff times for the races. The 21K, 30K and 50K distances are recognized on the UTMB Index and officially ITRA recognized; the 21K and 30K earn 1 ITRA point each and the 50K earns 2 ITRA points.

Registered Relentless runners may camp for free at The Ark. The rustic off-grid campsite includes flat tenting areas, clean outhouses, a firepit, a picnic table and drinking water provided; warm outdoor showers are available for a small fee. Visit the organization's website for the most recent information.

Race information

50 km
50k
30 km
30k
Half Marathon
21k
10 km
10k
5 km
Visit the organization's website for the most recent information.
Trail runs nearby

A free community trail gathering in Gatineau Park offering a comfortable paced 10 km trail run or a 5 km hike on Trail 36. Meeting at P11 O'Brien near Meech Lake, rain or shine, with a post activity meetup at Les Saisons Cafe.

Trail running in Gatineau on 7 June 2026 with distances from 1 km to 31 km. Courses run through natural areas near Collège Saint‑Alexandre with professional timing and on course refreshment stations.

A backyard ultra at The Ark near Ottawa with individual, two person team and winter snowshoe formats. Loops run around 5 to 6 km and runners must return each hour to a central corral to continue.

Chip-timed trail race at Camp Fortune on June 27, 2026, offering distances from 5 km to 30 km and relay options. Registration includes post-race meal, beverage, aid stations, photographer and finisher medal.

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