When is Trailbreaker?

Trailbreaker takes place on Mar 29, 2026. That's in 4 weeks.

Where is Trailbreaker located?

Trailbreaker is held in Waukesha, Wisconsin, United States.

What distances are available at Trailbreaker?

Trailbreaker offers the following distances: 26.2M, 20M, 13.1M, 6.2M, 3.1M, 1.85M.

How do I register for Trailbreaker?

You can register for Trailbreaker through the official registration page.

What is the typical weather for Trailbreaker?

Based on historical data, you can expect temperatures between 29°F and 48°F on race day. There's approximately a 13% chance of precipitation.

Trailbreaker (1.85M-26.2M) - Mar 29, 2026 | Waukesha, WI

Embark on an unforgettable running adventure at the annual Trailbreaker, a cherished Waukesha tradition since 1993, set for March 29, 2026. Starting and finishing at the Schuetze Recreation Center in Waukesha, WI, this event offers an impressive array of distances including a full marathon (26.2M), 20M, half marathon (13.1M), 10K (6.2M), 5K (3.1M), and a 1.85M Kids' Run, ensuring a perfect challenge for every runner. Typical race day conditions feature pleasant temperatures, with highs around 48°F and lows near 29°F, and only a 13% chance of precipitation, creating ideal running weather.

What truly sets the Trailbreaker apart are its unique course options and inclusive atmosphere. Marathoners can choose their challenge: the "super flat" Glacial Drumlin Trail Marathon, celebrated for being a PR-friendly course featuring paved trails through scenic parks like Frame, Veterans, Grede, Bethesda, and Fox River Sanctuary, or the rugged Lapham Peak Marathon, which includes city streets, paved trails, and a challenging 5-7 miles of the Ice Age Trail, culminating in a climb to the 40-foot Lapham Peak Tower for breathtaking views. For those seeking a unique experience, new for 2026 are Rucking races across various distances, and "The RAD" (Run Any Distance) option, providing full race support and swag without the pressure of age-group awards, ideal for high-mileage training days. Aid stations, stocked with water, sports drinks, and energy gels, are conveniently placed approximately every two miles to keep you fueled.

Beyond the personal challenge, participating in the Trailbreaker contributes to a greater cause. Since 2009, the event has served as a vital fundraiser for the Park Foundation of Waukesha, with proceeds dedicated to enhancing city parks, trails, recreation programs, and the urban forest. Runners consistently praise the well-supported course and friendly atmosphere, making it a fantastic choice for both seasoned marathoners and those looking for an adventurous first race of the year. Every finisher receives a unique, custom-crafted "woodle" medal, a special keepsake from your achievement in this community-focused event.