Dallas Marathon
Race Day Weather
Cool start — fast day potential, warming through the race
A cool 47°F at the start line is ideal for fast times — expect to warm up quickly once you're moving. Temperatures rising to 61°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 Dallas 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 Dallas 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 Info
The Dallas Marathon has started and finished in Downtown Dallas since 1971, when local runner Tal Morrison founded the race with a $25 ad in Runner's World. It was known as the Dallas White Rock Marathon until 2012 and added BMW as title sponsor in 2016. The course leaves Dallas City Hall Plaza, crosses the Margaret Hunt Hill Bridge into the Design District, passes Highland Park, circles White Rock Lake, and returns through Lakewood and the Swiss Avenue Historic District to the downtown finish. It is a Boston Marathon qualifier and has run every December since 1976, missing only 2013 and 2020; race weekend also includes a half marathon, 10K, 5K and 50K ultramarathon.