This event is in the past.It took place on May 1, 2026 at Leisure Island Seine Loops.




Test your limits on a scenic endurance trail winding through protected Natura 2000 wetlands along the Seine. Choose a 4-hour or 12-hour challenge, running solo or splitting the effort with teammates in a relay format.
endurance running
nature trail
team relay
Natura 2000 protected
Tips
👥run solo or in teams of 2, 4, or 6
🌿course runs through protected Natura 2000 areas
🏖️venue has beach, splash areas, and family activities
Trail Challenge 78




Test your limits on a scenic endurance trail winding through protected Natura 2000 wetlands along the Seine. Choose a 4-hour or 12-hour challenge, running solo or splitting the effort with teammates in a relay format.
endurance running
nature trail
team relay
Natura 2000 protected
Tips
👥run solo or in teams of 2, 4, or 6
🌿course runs through protected Natura 2000 areas
🏖️venue has beach, splash areas, and family activities
Make it an outing
Add nearby spots before or after your event