TrailPace estimates hiking time two ways:
- Naismith's rule: 5 km/h on flat + 1 hour per 600 m of ascent (the classic, widely used in the UK)
- Tobler's hiking function: walking speed = 6 * exp(-3.5 * |slope + 0.05|) (km/h), a smoother model that accounts for the small speed boost on a slight downhill
Apply a fitness factor (Casual 1.3x / Standard 1.0x / Fit 0.85x / Very fit 0.7x) to scale either estimate to your group.
100% offline. No GPS. No account. One purchase.
Hiking time estimator. Naismith rule + Tobler hiking function + fitness factor.