The Trailbreaker
Race Day Weather
Cool morning, warming later
Runners will face a cool start at 38°F, gradually warming to 62°F. Wind from the SW at 14 mph with gusts up to 24 mph will challenge runners throughout. With humidity at 49%, hydration should be prioritized, especially as temperatures rise. Adjust pacing strategies to maintain energy in the warming conditions.
Pace Calculator
Get forecast alerts for The Trailbreaker
We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.
Race Info
The Trailbreaker is Waukesha's home grown running event and has been held annually since 1993. This Waukesha tradition initially consisted of a Marathon, Half-Marathon, and 5K Run/Walk. Both Marathon courses are certified by the USATF and may provide qualifying credentials for other races. We are excited to once again offer a 10K event at the Trailbreaker. The Trailbreaker originally was the brainchild of three running colleagues (amigos). Since 2009, the Park Foundation of Waukesha, Inc. (PFW Inc.), has organized and hosted this annual event as a fundraiser for the enhancement of city parks, trails, recreation programs and the urban forest. Source