Wisconsin Obstacle Trail Challenge August 5-6, 2023 Wisconsin Obstacle Trail Challenge 2024 - More Information Coming Soon! 2023 WI Northwoods Trail Challenge ResultsResults – All ClassesAugust 6th, 2022 Northwoods Trail Challenge ResultsOpen & YouthJune 4th, 2022 Northwoods Trail Challenge ResultsOpen ResultsYouth Results2021 Northwoods Trail Challenge ResultsOpen ResultsYouth Results