Trail
50k Ultra
50 km
Start: 07:00 AM
80.00 EUR

Trail
50k Ultra
50 km
Start: 07:00 AM
80.00 EUR
Running
Mad Trapper Backyard Ultra
50 km
Running
Relentless Trail Race 50k
50 km
Trail
30k Hybrid
30 km
Start: 08:00 AM
60.00 EUR
Running
Relentless Trail Race 30k
30 km
Running
Relentless Trail Race 20k
20 km
Trail
21k Insanity
10.5 km
Start: 08:00 AM
50.00 EUR
Trail
10k Crazed Course
10 km
Start: 10:00 AM
Running
Mica Run 10k
10 km
Running
Relentless Trail Race 10k
10 km
Running
Basset Ear Prediction Run
8 km
Running
Snowshoe Backyard Ultra regular loop
5.7 km
Trail
5k Mad Course
5 km
Start: 10:00 AM
Running
Mica Run 5k
5 km
Running
Relentless Trail Race 5k
5 km
Running
Snowshoe Backyard Ultra Kristi Loop
5 km
Trail
3k Try a Trail
3 km
Start: 10:00 AM
Running
Mica Run 3k
3 km
Running
Relentless Trail Race 3k
3 km
The Mad Trapper Relentless is a fall ultra and trail race held at The Ark in Denholm, Quebec — just north of Ottawa in the Gatineau Hills. Distances range from 3K to 50K, including 21K and 30K options, with UTMB Index and ITRA recognition and free wilderness camping for registered racers.
BBQ at finish featuring local burgers, vegetarian burgers, hot dogs, chips, ice cream, and beer — prepared by Monique and the team.
The Basset Ear Prediction Run (8km, April 18, 2026 at 10am) asks you to predict your finish time by writing it on a board at the start. After the run, check the board to see how close you were, collect a sticker with your finish time, and enjoy a Basset Ear with famous Mad Trapper brownies and beer — no clocks or phones allowed during the race.
No — dogs are welcome but not required. The Mica Run offers 3k, 5k, and 10k options for runners whether or not they bring their dog.
Yes — many families participate. The trails are twisty and turny with rocks and roots; kids often see them as fun obstacles while adults may find them challenging.
We are a grassroots trail race series hosted on our own 164-acre private trail network in Denholm, Quebec. Known for no-cutoff policies, fair & fun random prize drawings, and an unforgettable post-race BBQ celebration.
Last updated: Jun 5, 2026, 07:53:11 PM
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