Out with the Old 10K
Out with the Old 10K race day weather
Cool start — fast day potential, warming through the race
A cool 44°F at the start line is ideal for fast times — expect to warm up quickly once you're moving. Temperatures rising to 56°F through the course will gradually increase perceived effort in the second half. Light winds shouldn't be a major factor for pacing.
Pace Calculator
Enter a finish time to see what race day does to it.
Get forecast alerts for Out with the Old 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 Out with the Old 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 Out with the Old 10K
The 10K is run on the Saturday before Christmas at Sunset Park in Las Vegas, Nevada. It covers two laps of the 5K loop on the paved History Walk trails through the park. The route is flat, with only slight rises and falls along the way.
Race weekend
Out with the Old 10K FAQ
When is the 2026 Out with the Old 10K?
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Out with the Old 10K weather history
Temperature History
Range of temperatures during race hours for each year.
Detailed History
| Year | Conditions | Low / High | Rain | Dew Point | Score |
|---|---|---|---|---|---|
2025 | | 48°/53° | - | 35° | |
2024 | | 47°/52° | - | 20° | |
2019 | | 44°/49° | - | 27° | |
2017 |  | 48°/50° | - | 18° |