Infinity Trail

Even though the figures might seem daunting, the format is still accessible to everyone!

The idea is simple: cover 6.7 km in under an hour, which works out at an average of 6.7 km/h. Accessible, isn’t it? Whether you’re aiming for 3, 5 laps or more, there’s a place for you! 💪

At the Backyard in Laval, two participants stopped after the first lap, and the average number of laps completed by participants was 10.7. No pressure, just the joy of pushing yourself.

This loop format is ideal for testing long distances, getting a taste of ultra-trail running, or simply beating your own records. What’s more, you always return to base camp every hour and are never more than 3 km from the start – it’s a safe race, even at night. 🌙

And here’s a statistic that might just convince you: 50% beat their distance record and 20% double it!

So, what are you waiting for? We’ll see you in 2026!

Backyards Ultra World Records

• Women: 87 laps, or 583 km
• Men: 119 laps, or 798 km

French Records Backyards Ultra

• Women: 61 laps, or 409 km
• Men: 84 laps, or 563 km

Depending on how many loops you make, you’ll get a different medal… it’s up to you to make one more loop to reach the next level

• 1 to 3 laps: I’ve tried it
• 4 to 6 laps: half-marathon
• 7 to 11 laps: marathon
• 12 to 14 laps: 12 hours – 50 miles
• 15 to 19 laps: 100 km
• 20 to 23 laps: 20 loops
• 24 to 29 laps: 24-hour – 100 miles
• 30 to 35 laps: 200 km
• 36 to 44 laps: 36 hours – 150 miles
• 45 to 47 laps: 300 km
• 48 to 49 laps: 48 hours – 200 miles
• 50 to 59 laps: 50 laps
• 60 to 71 laps: 400 km
• 72 to 74 laps: 72 hours – 300 miles
• 75 to 89 laps: 500 km
• 90 to 95 laps: 600 km
• 96 to 116 laps: 4 days
• 120 or more: WORLD RECORD