For an ascent (or descent) route, the average slope Pt is the ratio between the gradient y and the projection x of the route distance d so : Pt = y / x


For a calculation with a low angle, x can be replaced by d, otherwise a precise calculation must be done as follow.

Gradient (y): m (+ ascent, - descent)
Distance (d): m
Angle: °
Slope: %

Exemples of sites giving gradient and distance:
  • OpenRunner
  • ClimbByBike

Design of the calculator