Calculator | VDOT

Running Calculator

Calculate your Critical Running Speed (CRS) and running speed training zones.

Get your expected time for the following race distances:

Half Marathon (13.1)
Marathon (26.2)
Half Ironman (70.3) Half Marathon
Ironman (140.6) Marathon
Running Calculator

Running Calculator


Jack Daniels, "Daniels Running Formula", Human Kinetics, 1998

J. Daniels and J.R. Gilbert, "Oxygen Power: Performance Tables for Distance Runners", British Journal of Sports Medicine, 1979