Southernmost Half Marathon and 10K

Key West, FL, USA · October 10, 2027·
partly-cloudy-day81°·81° high·Breezy·Dry
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Race Day Weather

partly-cloudy-day
81°at start
81° high
Breezy
Dry
Your goal
0:00:00

Warm and humid, adjust pace

Runners will face a constant temperature of 81°F throughout the race, with humidity at 79% and a dew point of 74°F. A light E wind at 11 mph may provide some relief, but it won't significantly impact pacing. Given the heat and humidity, it's advisable to start conservatively and hydrate frequently.

Race day forecast available in 333 days
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Pace Calculator

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Race Plan

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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 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.

Race weekend

Sunday, October 10
7:00 AMHalf Marathon (13.1 mi)
7:20 AM10K (6.2 mi)
7:30 AM5K (3.1 mi)
Area Map

Course Map

FAQ

When is the 2027 Southernmost Half Marathon and 10K?

The 2027 Southernmost Half Marathon and 10K will be held on Sunday October 10, 2027.

What is the time limit for the Southernmost Half Marathon and 10K?

The time limit for the Southernmost Half Marathon and 10K is 3.5 hours.

What will the weather be like for the 2027 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 3 years of data
Avg Temp
81°F
L:80° H:82°
RunScore
1
Conditions
Rain Freq
0%
0 of 3 yrs
Wind7mph
Dew78°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScore
2026
partly-cloudy-night
85°/86°-
1
2025
clear-night
75°/79°-
2
2024
partly-cloudy-night
81°/81°-
1