Persistence Backyard Ultra 2025

The Persistence Backyard Ultra is a challenging endurance race held in Arva, Ontario. Participants run a 6.7056 km loop every hour, repeating until only one runner remains, testing stamina and strategy. This event is affiliated with Lazarus Lake's Big Dog's Backyard Ultra and offers competitors a chance to qualify for this prestigious race.

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The course features a 3.36 km loop done twice each hour, comprising crushed stone trails, grass, and dirt roads. To promote community and charity, a portion of registration fees supports the Children's Health Foundation. The race is limited to 65 participants to maintain an intimate, competitive atmosphere.

• 3.36 km loop completed twice per hour to meet distance requirement
• Terrain includes crushed stone trails, grassy areas, and dirt roads
• Designed to test endurance and strategy
• Event limits participants to ensure quality experience

• Run a 6.7056 km loop every hour until a single winner remains
• Affiliated with Lazarus Lake's Big Dog's Backyard Ultra
• Course consists of crushed stone trails, grass, and dirt roads
• Participant cap of 65 runners
• Portion of registration fees donated to Children's Health Foundation