The Trailbreaker

Waukesha, WI, USAMarch 29, 2026
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Race Day Weather

partly-cloudy-day
35°
44° high
Breezy
Dry

Cool conditions, steady winds

Runners will face a temperature range from 35°F to 44°F with an average humidity of 68%. Winds will be steady from the S at 12 mph, with gusts up to 27 mph. It's advisable to wear layers for warmth and maintain a consistent pace to counter the wind.

Race day forecast available in 2 days
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Pace Calculator

Distance: 26.2mi
0:00:00
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Weather Adj.
Common Goals:

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

Area Map

Course Map

FAQ

When is the 2026 The Trailbreaker?

The 2026 The Trailbreaker will be held on Sunday March 29, 2026.

Is the The Trailbreaker a Boston Marathon Qualifier?

Yes, the The Trailbreaker is an official Boston Marathon qualifier.

Historical Weather

Based on 1 years of data
Avg Temp
44°F
L:30° H:44°
RunScore
8
Conditions
Rain Freq
0%
0 of 1 yrs
Wind11mph
Dew21°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScore
2025
partly-cloudy-day
30°/44°-
8