VAM stands for “Velocità Ascensionale Media”, an Italian term that means “average ascent speed.”
In cycling, VAM measures how fast a rider climbs, expressed in vertical meters per hour.
This metric shows the rate of elevation gain and is often used to assess climbing performance.
A higher VAM indicates stronger climbing ability, especially on long or steep ascents.
VAM is calculated by dividing the total vertical meters climbed by the time in hours.
For example:
If a cyclist gains 600 vertical meters in 30 minutes, their VAM is 1,200 m/h.
Several factors influence VAM — including gradient, rider weight, power output, and altitude.
That’s why it’s best used for comparing efforts on similar climbs or tracking personal progress over time.
While VAM alone doesn’t capture total performance, combining it with power data and heart rate gives a clearer view of form and climbing efficiency.
In both professional and amateur cycling, monitoring VAM helps identify improvements during mountain or hill training.
Understanding what VAM means in cycling helps you analyze your rides more effectively and set specific climbing goals to improve over time.
What your VAM says about your climbing power
VAM is closely tied to your power-to-weight ratio, which is why it works as a proxy for climbing fitness. On a steady climb a rough relationship holds: your VAM in meters per hour is approximately your power-to-weight ratio in watts per kilogram multiplied by a gradient factor of around 200 to 300, with steeper climbs sitting at the higher end because less energy is lost to air resistance. That is why the same rider posts a higher VAM on a steep 10 percent climb than on a shallow 4 percent one at the same power, and why VAM is only meaningful when comparing efforts on similar gradients.
Typical VAM figures by rider level, on sustained climbs, look roughly like this:
| Rider level | Typical VAM |
|---|---|
| Recreational | 600 to 900 m/h |
| Trained amateur | 900 to 1,200 m/h |
| Elite amateur | 1,200 to 1,500 m/h |
| Professional | 1,500 to 1,800 m/h |
Use these as a reference point rather than a strict scale, since gradient, altitude, and pacing all shift the numbers.