Lake Mead Marathon
Race Day Weather
Cool start, gradual warm-up
Runners will face a cool start at 43°F, warming to 54°F by the finish. With light winds from the ESE at 8 mph, it's a non-factor. Humidity is comfortable at 40%, allowing for a consistent pace throughout the race. A throwaway layer may be beneficial pre-race as feels-like temperatures drop to 37°F.
Pace Calculator
Enter a finish time to see what race day does to it.
Get forecast alerts for Lake Mead Marathon
We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.
Race Info
Located entirely within Lake Mead National Recreation Area, the run will start at Boulder Beach and lead you onto the paved River Mountain Loop Trail offering a Marathon, Half Marathon, 10K and 5K. This epic run will take you on a journey through time, with views of the largest man-made lake in US history. The January desert-temperatures and views of Lake Mead make this run a must-do!