Southernmost 10K
Southernmost 10K race day weather
Hot start
A warm 81°F start means heat management is critical — consider dialing back your goal pace by 10-20 sec/mi. Light winds shouldn't be a major factor for pacing. Moderate humidity at 78% is worth noting for effort level, especially in later miles.
Pace Calculator
Enter a finish time to see what race day does to it.
Get forecast alerts for Southernmost 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 10K 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.
About the Southernmost 10K
The Southernmost 10K is a 6.2-mile run along the south coast of Key West on Sunday morning of race weekend. The route passes Smathers Beach, runs out and back along the ocean, and finishes with an out and back along the Edward Knight Pier. The course is flat and close to sea level, with the Atlantic beside it for most of the distance.
Race weekend
Southernmost 10K FAQ
When is the 2027 Southernmost 10K?
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Southernmost 10K weather history
Temperature History
Range of temperatures during race hours for each year.
Detailed History
| Year | Conditions | Low / High | Rain | Dew Point | Score |
|---|---|---|---|---|---|
2026 | | 85°/85° | - | 80° | |
2025 |  | 75°/75° | - | 74° | |
2024 | | 81°/81° | - | 78° |