1327 Wall Street, Oconomowoc WI
Friday, April 10th, 2026
Experience seven races over seven months—building to an epic series finale. The Wisconsin Trail Assail tours some of the most scenic routes in Waukesha County and Wisconsin State Parks, with courses for every level.
Pick your challenge each month: 5K, 10K, or Half Marathon. Run it, walk it, chase a PR, or just collect trail miles with friends—the series is proudly walker-friendly.
Why you’ll love it:
Ready to hit the dirt? Join the Wisconsin Trail Assail and stack finish lines all season.
Your ticket to skipping the packet pickup line and heading straight to the start line!
How It Works:
More running, less waiting—because race day should be about the trails, not the lines. 🌳
Important Notice: Your All Access Pass is non-transferable. Sharing your pass with another individual is not permitted. If someone else uses your pass, you will forfeit your access privileges.
Thank you for respecting this policy—it helps us keep the program fair for all participants.
Rucking is a physical activity that involves walking or hiking with a weighted backpack (called a rucksack). The term comes from the military, where soldiers train and operate carrying heavy loads over long distances. In civilian fitness and recreation, rucking is gaining popularity as a versatile and low-impact workout. We now offer it at all Wisconsin Trail Assail Events!
More information about rucking.
Series Registration:
Single Race Registration:
Want to participate in individual events? Click on the specific race link below to register for that event.
Kiddo's 1K Registration:
Our Kiddo's Races are free! If your little one wants to join the fun, please register them for the individual Kiddo's race of your choice.
Get ready to explore the trails, challenge yourself, and have a blast with the Wisconsin Trail Assail Series! 🌳👟
Course Map
Suggested Races
Find The Run Newsletter