Calculateur de Temps de Randonnée — Formule
## How Hiking Time Is Estimated
### Naismith's Rule
Developed in 1892 by Scottish mountaineer William Naismith:
**Time = Distance / Speed + Elevation Gain / Climbing Rate**
- Flat walking speed: ~3 miles per hour
- Climbing rate: ~2,000 ft per hour (adds time for elevation gain)
### Adjustments
- **Fitness factor**: Adjusts for individual speed
- **Break time**: Add 20% for rest stops, water breaks, photos, and navigation
- **Descent**: Steep descents are almost as slow as climbing. This calculator focuses on ascent.
### Naismith's Rule
Developed in 1892 by Scottish mountaineer William Naismith:
**Time = Distance / Speed + Elevation Gain / Climbing Rate**
- Flat walking speed: ~3 miles per hour
- Climbing rate: ~2,000 ft per hour (adds time for elevation gain)
### Adjustments
- **Fitness factor**: Adjusts for individual speed
- **Break time**: Add 20% for rest stops, water breaks, photos, and navigation
- **Descent**: Steep descents are almost as slow as climbing. This calculator focuses on ascent.
Exemple Résolu
Estimate time for an 8-mile trail with 2,000 ft elevation gain, average fitness.
- Flat time = 8 / 3 = 2.67 hours.
- Climb time = 2000 / 2000 = 1.0 hours.
- Moving time = (2.67 + 1.0) x 1 = 3.67 hours.
- Total with breaks = 3.67 x 1.2 = 4.4 hours.
- Average speed = 8 / 3.67 = 2.2 mph.