Compare two marathons
Both profiles, same vertical scale
Each profile starts from its own start line, so you compare the shape of the climbing, not the altitude. Distance runs left to right over the full course.
Race-day temperature, every year
The mean temperature at each race's start across the hours of the race, on the date its rule gives for that year, from the ERA5 reanalysis.
| Measure | A | B | Difference |
|---|
Climb and descent are measured the same way on every course: the course line, sampled every 25 m, smoothed over 100 m. How it's measured.