Calculateur de Taux de Dénivelé Positif
Calculez votre vitesse de montée en mètres par heure.
VAM (Vertical Ascent Meters/hr)
610 m/hr
VAM (Vertical Ascent Meters/hr) vs Elevation Gained
Formule
## What Is VAM? ### Definition VAM stands for *Velocita Ascensionale Media* (Average Ascent Speed). It measures how fast you gain elevation. ### Formula **VAM = Elevation Gain (m) / Time (hours)** ### Benchmarks | Activity | Typical VAM | |----------|------------| | Hiking (moderate) | 300-500 m/hr | | Hiking (fast/fit) | 500-800 m/hr | | Cycling (recreational) | 600-900 m/hr | | Cycling (pro) | 1,500-1,800 m/hr | | Trail running | 600-1,200 m/hr | | Mountaineering | 200-400 m/hr |
Exemple Résolu
Gained 3,000 ft in 90 minutes of climbing.
- 01Elevation in meters = 3000 x 0.3048 = 914 m.
- 02Time in hours = 90 / 60 = 1.5 hours.
- 03VAM = 914 / 1.5 = 610 m/hr.
- 04Feet per hour = 3000 / 1.5 = 2000 ft/hr.
Questions Fréquentes
Is VAM useful for comparing different activities?
VAM is most useful for comparing the same activity. A cyclist climbing at 1,200 m/hr is not directly comparable to a hiker at 500 m/hr because the mechanisms are different. Within the same sport, VAM is excellent for tracking fitness progress.
Does altitude affect VAM?
Yes. Above 8,000 ft, reduced oxygen noticeably slows climbing rate. At 14,000 ft, most hikers climb at 50-70% of their sea-level VAM. Acclimatization partially mitigates this.
How do I measure elevation gain accurately?
A GPS watch with a barometric altimeter is the most accurate consumer-level tool. Phone GPS alone can be off by 50-100 ft. Trail guides and mapping apps like AllTrails also provide elevation profiles.
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