01
Plan outdoor time and safety margin
Descent before sunset, start time, headlamp runtime, altitude-adjusted temperature, and group pace are calculated with conservative safety margins.
Elevation gain rate calculator
Divides elevation gain by hiking hours and distance to output your climbing rate in meters per hour and per kilometer.
This reference helper calculates inputs in the current browser only. For decisions requiring official data, check the latest guidance from the relevant authority.
Elevation gain rate calculator
02
Field judgment and forecasts come first
Weather, trail condition, fitness, and gear matter more than the formula. If the margin is tight, shorten the plan, turn back, or add backup gear.
Frequently asked questions
How much sunset buffer should I keep?
It depends on terrain and group size, but enter a separate safety buffer. If the result is negative, shorten the route or start earlier.
Whose pace should define group speed?
Use the slowest member. Planning from the faster average underestimates rest, waiting, and late-day risk.