Estimate hiking time using Naismith’s rule with terrain and load adjustments.
Ascent dominates hiking time, and sustained steep descent adds time rather than saving it because footing and braking slow progress. Pack weight compounds both effects. Assuming descent is free is why hikers routinely finish long routes in the dark, since the return leg takes as long as the climb.
Hiking Time
Naismith with corrections: distance ÷ speed + ascent ÷ 600 + a steep descent penalty
These figures are estimates based on population-average formulas and are intended for training and recreational planning only. They are not medical advice. Consult a qualified health professional before starting or changing an exercise programme, particularly if you have an existing medical condition.
Naismith with corrections: distance ÷ speed + ascent ÷ 600 + a steep descent penalty Ascent dominates hiking time, and sustained steep descent adds time rather than saving it because footing and braking slow progress. Pack weight compounds both effects.
Assuming descent is free is why hikers routinely finish long routes in the dark, since the return leg takes as long as the climb.
This calculator takes 5 inputs: Distance, Total ascent, Total descent, Walking speed on the flat, Pack weight. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.