Havasu Half Marathon
Race Day Weather
Comfortable temps, big temp swing
Mild 56°F temps at gun time mean comfortable early miles without overheating risk. Temps will climb significantly to 78°F by later miles, so expect fading conditions as the race progresses. Light winds shouldn't be a major factor for pacing.
Pace Calculator
Get forecast alerts for Havasu Half Marathon
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 Havasu Half Marathon race plan
True Effort pacing, weather-adjusted mile splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide — all personalized to your goal and race-day conditions.
Race Info
The Havasu Half Marathon starts and finishes at London Bridge Beach in Lake Havasu City, Arizona, sending runners over and under the relocated London Bridge before a final stretch along a bike trail around Havasu Island. The USATF-certified course stays within 440 yards of the Colorado River and keeps elevation change under 33 feet. Mercury Events has organized the race since 2021, and proceeds benefit the Boys & Girls Club of the Colorado River.
Historical Weather
Temperature History
Range of temperatures during race hours for each year.
Detailed History
| Year | Conditions | Low / High | Rain | Dew Point | Score |
|---|---|---|---|---|---|
2026 | 57°/71° | - | 20° | ||
2025 | 53°/64° | - | 25° | ||
2024 | 56°/69° | - | 38° | ||
2023 | 59°/79° | - | 32° | ||
2022 | 64°/83° | - | 33° |