Hoover Dam Half Marathon

Lake Mead, NV, USA · December 5, 2026·
partly-cloudy-day48°·54° high·Light·Dry
10
Register

Hoover Dam Half Marathon race day weather

partly-cloudy-day
48°at start
60° high
Light
Dry
Your goal
0:00:00

Cool start — fast day potential, warming through the race

A cool 48°F at the start line is ideal for fast times — expect to warm up quickly once you're moving. Temperatures rising to 60°F through the course will gradually increase perceived effort in the second half. Light winds shouldn't be a major factor for pacing.

Race day forecast available in 14 days
partly-cloudy-night10
partly-cloudy-day10
partly-cloudy-day10
partly-cloudy-day10
partly-cloudy-day10
partly-cloudy-day10
partly-cloudy-day10
partly-cloudy-day10
partly-cloudy-day10
partly-cloudy-day10
partly-cloudy-day10

Pace Calculator

13.1mi
0:00:00
HH:MM:SS
Pace
—

Enter a finish time to see what race day does to it.

Common Goals:

Get forecast alerts for Hoover Dam Half Marathon

We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.

Race Plan

Get your personalized Hoover Dam Half Marathon 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.

Race Pace
Weather Splits
Nutrition
Gear & Packing
T-Minus
Carb Tracker
Spectator Guide
Race Band

About the Hoover Dam Half Marathon

The half marathon at the Hoover Dam Marathon covers 13.1 miles on Lake Mead National Recreation Area trails near Boulder City, Nevada, and is one lap of the full marathon course. From the Boulder Beach picnic area it climbs gently along a wide roadway, joins the paved River Mountains Loop Trail through the Mojave Desert, then follows the hard-packed Historic Railroad Tunnel Trail through several 1930s railroad tunnels above Lake Mead. Six switchbacks lead down to a loop of the upper parking garage at Hoover Dam, with views of the dam and the bypass bridge, before runners retrace the route, run a short out-and-back past the Boulder Beach access road and finish at the picnic area. The course does not cross the dam; about 7 miles are packed dirt and the rest is paved, so road shoes are enough.

Race weekend

Saturday, December 5
8:00 AMMarathon (26.2 mi)
8:30 AMHalf Marathon (13.1 mi)
8:40 AM10K (6.2 mi)
8:45 AM5K (3.1 mi)
Marathon Relay (26.2 mi)
Area Map
Course Map

Hoover Dam Half Marathon FAQ

When is the 2026 Hoover Dam Half Marathon?

The 2026 Hoover Dam Half Marathon will be held on Saturday December 5, 2026.

What is the time limit for the Hoover Dam Half Marathon?

The time limit for the Hoover Dam Half Marathon is 5.58 hours.

What will the weather be like for the 2026 Hoover Dam Half Marathon?

The forecast calls for a high of 61°F and a low of 43°F with a 2% chance of rain. Check our detailed hourly forecast above for the best half marathon race plan.

What is the weather usually like for the Hoover Dam Half Marathon?

Over the 10 years racecast.io has race-day weather for (2015 to 2025), it averaged 42°F at the start and 52°F by a typical finish. It has not rained during race hours in any of those years.

What was the hottest Hoover Dam Half Marathon?

Of the 10 years on record, 2015 was the warmest, reaching 58°F during race hours. The coldest start was 2021, at 33°F.

What was the windiest Hoover Dam Half Marathon?

Of the 10 years on record, 2023 was the windiest, with wind averaging 12 mph during race hours. The calmest was 2018, at 2 mph.

Hoover Dam Half Marathon weather history

Based on 10 years of data
Avg Temp
47°F
L:42° H:52°
RunScore
10
Conditions
Rain Freq
0%
0 of 10 yrs
Wind3mph
Dew21°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2025
clear-day
46°/53°-
10
2024
clear-day
46°/57°-
10
2023
clear-day
44°/49°-
10
2022
partly-cloudy-day
38°/48°-
10
2021
clear-day
33°/42°-
10
2019
partly-cloudy-day
44°/53°-
10
2018
partly-cloudy-day
43°/54°-
10
2017
clear-day
41°/53°-
10
2016
partly-cloudy-day
41°/51°-
10
2015
clear-day
45°/58°-
10