Phoenix Marathon
Race Day Weather
Cool start, gradual warming
Runners will face a temperature rise from 43°F at the start to 57°F by the finish, with light winds from the SE at 6 mph. The average humidity is low at 40%, making conditions favorable. With a flat course and a significant descent from mile 2 to 4, runners can push their pace early but should prepare for headwinds in miles 7-8. Staying hydrated will be key as temperatures increase.
Pace Calculator
Get forecast alerts for Phoenix 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
The Phoenix Marathon is held in December in Phoenix, Arizona. The course starts at South Mountain Park Visitor Center, heads north on Central Avenue, follows the Salt River trail, and passes the Arizona State Capitol and Hance Park before finishing at Steele Indian School Park. A half marathon, 10 Miler and 5K run the same weekend. Runners who qualify for Boston can collect a free BQ luggage tag at the results tent. Source