Southernmost Half Marathon and 10K

Key West, FL, USA · October 11, 2026
partly-cloudy-day81°·81° high·Breezy·Dry
6
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Race Day Weather

partly-cloudy-day
81°at start
81° high
Breezy
Dry

Hot start, moderate wind, chance of rain

A warm 81°F start means heat management is critical — consider dialing back your goal pace by 10-20 sec/mi. Moderate winds around 13mph may affect pacing on open sections of the course. There's a chance of rain, so have a backup gear plan ready. Moderate humidity at 79% is worth noting for effort level, especially in later miles.

Race day forecast available in 10 days
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Distance: 13.1mi
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Race Info

The Southernmost Half Marathon and 10K takes place each October in Key West, Florida, starting and finishing at Higgs Beach. The half marathon route passes the Southernmost Point, Truman Waterfront Park, Mile Marker 0, and Mallory Square before finishing along Smathers Beach and the Edward Knight Pier. The event is organized by Jupiter, Florida-based Integrity Multisport. All finishers receive a t-shirt and medal.

Area Map

Course Map

FAQ

When is the 2026 Southernmost Half Marathon and 10K?

The 2026 Southernmost Half Marathon and 10K will be held on Sunday October 11, 2026.

What will the weather be like for the 2026 Southernmost Half Marathon and 10K?

The forecast calls for a high of 83°F and a low of 80°F with a 14% chance of rain.

Historical Weather

Based on 2 years of data
Avg Temp
84°F
L:78° H:84°
RunScore
5
Conditions
Rain Freq
50%
1 of 2 yrs
Wind8mph
Dew77°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScore
2025
clear-night
75°/82°Light
6
2024
partly-cloudy-night
81°/86°-
5