Hiking Ascent Time
Estimate hiking time using distance and elevation gain with Naismith's rule.
About Hiking Ascent Time
Naismith's rule adds about an hour of walking for every 600 meters of ascent, on top of the flat-distance time. The combined figure gives a robust estimate when planning a mountain day. Ignoring elevation gain badly underestimates a hike's true effort, so factoring ascent prevents starting an outing you cannot finish before dark.
Formula
Hiking Ascent Time
Time = distance/speed + ascent/600 (hours)
- 600
- Meters of climb that add roughly one walking-hour
Worked example
With the default values below, Hiking Ascent Time returns Base Walking Time of 1.8. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Distanceminimum 0 km
- 8 km
- Total ascentminimum 0 m
- 600 m
- Walking speedminimum 0.1 km/h
- 4.5 km/h
Results
- Base Walking Time
- 1.8 h
- Ascent Extra
- 1.0 h
- Total Time
- 2.8 h
- Total Minutes
- 167
Step by step
- 1Values used
- 2Hiking Ascent Time
- 3Base Walking Time= 1.8 h
- 4Ascent Extra= 1.0 h
- 5Total Time= 2.8 h
- 6Total Minutes= 167
Assumptions and limits
- The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
- Figures are rounded for display to 1 decimal place, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
Frequently Asked Questions
How is Hiking Ascent Time calculated?
Time = distance/speed + ascent/600 (hours) Naismith's rule adds about an hour of walking for every 600 meters of ascent, on top of the flat-distance time. The combined figure gives a robust estimate when planning a mountain day.
Why does Hiking Ascent Time matter?
Ignoring elevation gain badly underestimates a hike's true effort, so factoring ascent prevents starting an outing you cannot finish before dark.
What values do I need to enter?
This calculator takes 3 inputs: Distance, Total ascent, Walking speed. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.