The Trailbreaker 10K

Waukesha, WI, USA · April 4, 2027·
partly-cloudy-day37°·39° high·Breezy·Dry
10
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Race Day Weather

partly-cloudy-day
37°at start
45° high
Breezy
Dry
Your goal
0:00:00

Cold start — layer up, moderate wind

Runners will start in chilly 37°F conditions — dress in layers for the corral and plan to shed early. Moderate winds around 13mph may affect pacing on open sections of the course. Moderate humidity at 67% is worth noting for effort level, especially in later miles.

Race day forecast available in 156 days
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Pace Calculator

6.2mi
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Race Plan

Get your personalized The Trailbreaker 10K race plan

A mile-by-mile breakdown of where your time goes, weather-adjusted splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide, all built around your goal and race-day conditions.

Race Pace
Weather Splits
Nutrition
Gear & Packing
T-Minus
Carb Tracker
Spectator Guide
Race Band

Race Info

The Trailbreaker 10K covers 6.2 miles and starts and finishes at the Schuetze Recreation Center in Frame Park, Waukesha. It is an out-and-back course that turns around about three miles from the start and returns along the same route. The route is essentially flat, which makes it a fast option on the Sunday of race weekend.

Race weekend

Sunday, April 4
7:45 AMKiddos 1K (0.6 mi)
8:00 AMMarathon (26.2 mi)8:00 AMHalf Marathon (13.1 mi)
8:15 AM10K (6.2 mi)
8:15 AM5K (3.1 mi)

FAQ

When is the 2027 The Trailbreaker 10K?

The 2027 The Trailbreaker 10K will be held on Sunday April 4, 2027.

What is the time limit for the The Trailbreaker 10K?

The time limit for the The Trailbreaker 10K is 5.75 hours.

What will the weather be like for the 2027 The Trailbreaker 10K?

The forecast calls for a high of 48°F and a low of 36°F with a 13% chance of rain. Check our detailed hourly forecast above for the best 10K race plan.

Historical Weather

Based on 5 years of data
Avg Temp
41°F
L:40° H:42°
RunScore
10
Conditions
Rain Freq
20%
1 of 5 yrs
Wind8mph
Dew31°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
partly-cloudy-day
42°/46°-
9
2025
partly-cloudy-day
35°/38°-
10
2024
partly-cloudy-day
42°/44°-
10
2022
cloudy
35°/37°Light
10
2019
cloudy
46°/47°-
10