Houston 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. Moderate humidity at 71% is worth noting for effort level, especially in later miles.
Pace Calculator
Get forecast alerts for Houston 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 Houston 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 Houston Marathon is an annual marathon usually held every January in Houston, Texas, United States, since 1972. With thousands of runners and spectators, it is the largest single day sporting event in the city. It is run concurrently with a half marathon and a 5 km race. The 2007 race included the first-ever satellite running of the event, run simultaneously in Fallujah, Iraq. Wikipedia
