Comrades Marathon
Race Day Weather
Warm afternoon, light breeze
Runners will face a temperature rise from 54°F at the start to 75°F by race's end, with an average humidity of 63%. A light WNW wind at 7 mph will keep conditions comfortable. To maintain performance, runners should start conservatively and stay hydrated as temperatures increase.
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.