Southernmost Half Marathon and 10K
Race Day Weather
Warm conditions, adjust pace accordingly
Runners will face a consistent temperature of 81°F throughout the race, combined with high humidity at 79% and a dew point of 74°F. Winds will be moderate from the E with gusts up to 19 mph. Runners should start conservatively and hydrate frequently to manage the warm and humid conditions.
Pace Calculator
Get forecast alerts for Southernmost Half Marathon and 10K
We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.
Get your personalized Southernmost Half Marathon and 10K race plan
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 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.
