Mad Trapper Backyard Ultra 2025

This page is kept as a past race archive for the Jun 21, 2025 edition in Denholm, Quebec. Use the links below to find upcoming races in the same area or distance category. You can also browse the 2025 race calendar.

The Mad Trapper Backyard Ultra is an endurance trail race held at The Ark, approximately 40 minutes north of Ottawa, in Denholm, Quebec. Participants run a looped trail course every hour, on the hour, until only one runner remains. The race offers several formats including the classic individual "Last Person Standing" on a full loop of roughly 5.5 to 6.0 km, the slightly shorter Kristi Loop (~5.2 km), and a unique 2-person team format.

Known for its technical and hilly terrain with alternating loop directions each hour, this race tests mental grit and physical endurance. The event includes a post-race celebration, with a buffet provided and space for crews and camping nearby.

* Classic Individual Last Person Standing event on Full Loop (~5.5 to 6.0 km per loop) * Individual Kristi Loop Last Person Standing option (~5.2 km per loop) * 2-Person Team event uses Kristi Loop (~5.2 km per loop) * All races start at 8:00 AM on June 21, 2025 * Trail surface with technical and hilly terrain * Loops alternate direction each hour * Personal aid required; water and food provided * Strollers not allowed

• Held at The Ark, 285 ch. de Farrellton, Denholm, QC, about 40 minutes north of Ottawa
• Choose between Full Loop (~5.5-6.0 km) and Kristi Loop (~5.2 km)
• Unique 2-Person Team Backyard Ultra format
• Technical, hilly trail terrain with alternating loop directions
• Post-race buffet celebration
• Space for crews, lawn chairs, coolers, and tent camping nearby
• Participant cap of 60 racers with early notifications to past participants