Back Your Badge Half Marathon

Plainfield, IN, USA · September 19, 2027·
partly-cloudy-day59°·62° high·Light·Dry
7
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Race Day Weather

partly-cloudy-day
59°at start
78° high
Light
Dry
Your goal
0:00:00

Comfortable temps, big temp swing

Mild 59°F temps at gun time mean comfortable early miles without overheating risk. Temps will climb significantly to 78°F by later miles, so expect fading conditions as the race progresses. Light winds shouldn't be a major factor for pacing. Moderate humidity at 71% is worth noting for effort level, especially in later miles.

Race day forecast available in 308 days
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Pace Calculator

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Race Plan

Get your personalized Back Your Badge Half Marathon 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 Back Your Badge Half Marathon is a USATF-certified 13.1-mile course that starts and finishes at the Richard A. Carlucci Recreation and Aquatic Center in Plainfield, Indiana. Runners head west through county and neighborhood roads, then spend about two miles on Historic US 40 through downtown Plainfield before crossing an iron bridge in Franklin Park onto the tree-lined Vandalia Trail. After leaving the marathon course near Plainfield Middle School, half marathoners loop back past Friendship Gardens Park and return along the shaded trail to the finish. The terrain is mostly flat with some rolling hills.

Race weekend

Sunday, September 19
7:20 AM5K (3.1 mi)7:30 AMMarathon (26.2 mi)
7:30 AMHalf Marathon (13.1 mi)

FAQ

When is the 2027 Back Your Badge Half Marathon?

The 2027 Back Your Badge Half Marathon will be held on Sunday September 19, 2027.

What is the time limit for the Back Your Badge Half Marathon?

The time limit for the Back Your Badge Half Marathon is 4 hours.

What will the weather be like for the 2027 Back Your Badge Half Marathon?

The forecast calls for a high of 79°F and a low of 59°F with a 7% chance of rain. Check our detailed hourly forecast above for the best half marathon race plan.

Historical Weather

Based on 4 years of data
Avg Temp
66°F
L:65° H:68°
RunScore
5
Conditions
Rain Freq
25%
1 of 4 yrs
Wind4mph
Dew62°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
partly-cloudy-night
72°/75°-
3
2025
rain
65°/68°Light
5
2024
clear-night
66°/71°-
5
2023
partly-cloudy-night
57°/61°-
7