Comrades Marathon
Race Day Weather
Cool start, warming up
Runners will face temperatures starting at 54°F and peaking at 75°F. With light winds from the W and humidity around 63%, pacing should remain steady throughout. As the day warms, adjusting pace to conserve energy is advisable, particularly during the late race when temperatures rise.
Pace Calculator
Enter a finish time to see what race day does to it.
Get forecast alerts for Comrades 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 Comrades Marathon is the world's largest and oldest ultramarathon, going strong since 1921 when it was founded by a WWI veteran to honor fallen soldiers. It alternates annually between the "up" run from Durban to Pietermaritzburg and the "down" run back, with each version offering its own set of challenges including the notorious "Big Five" hills like Polly Shortts. Runners face a tough elevation profile, gaining over 1,800 meters on the "up" run, while the "down" run provides a net descent to near sea level, all along diverse terrain from coastal roads to inland stretches.