Windward Half Marathon

Kailua, HI, USA · March 21, 2027
partly-cloudy-day73°·74° high·Windy·Dry
7
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Race Day Weather

partly-cloudy-day
73°at start
74° high
Windy
Dry

Warm start, moderate wind

A warm 73°F start means heat management is critical — consider dialing back your goal pace by 10-20 sec/mi. Moderate winds around 17mph may affect pacing on open sections of the course. Moderate humidity at 77% is worth noting for effort level, especially in later miles.

Race day forecast available in 191 days
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Pace Calculator

Distance: 13.1mi
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Race Plan

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Weather-adjusted pacing, per-mile terrain splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide — all personalized to your goal and race-day conditions.

Race Conditions
Terrain Splits
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Carb Tracker
Spectator Guide
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Race Info

The Windward Half Marathon takes runners through Kailua on Oahu's windward coast, starting and finishing in front of Kailua Intermediate School near the Boys & Girls Club Windward Oahu clubhouse. The out-and-back course heads toward Kailua Road with the Koolau mountain range as a backdrop, while a companion 5K runs the opposite direction. The Mid-Pacific Road Runners Club has organized the race every spring since at least 2019.

FAQ

When is the 2027 Windward Half Marathon?

The 2027 Windward Half Marathon will be held on Sunday March 21, 2027.

What is the time limit for the Windward Half Marathon?

The time limit for the Windward Half Marathon is 4 hours.

What will the weather be like for the 2027 Windward Half Marathon?

The forecast calls for a high of 74°F and a low of 73°F with a 3% chance of rain.

Historical Weather

Based on 7 years of data
Avg Temp
78°F
L:72° H:78°
RunScore
7
Conditions
Rain Freq
29%
2 of 7 yrs
Wind10mph
Dew65°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScore
2026
rain
74°/76°Light
7
2025
partly-cloudy-night
69°/80°-
8
2024
partly-cloudy-night
75°/80°-
7
2023
partly-cloudy-night
70°/80°-
8
2022
partly-cloudy-night
71°/76°Light
7
2020
partly-cloudy-night
74°/77°-
7
2019
clear-night
72°/76°-
8