To calculate your anticipated finish time at a distance (for example, in a marathon), you must know your running time at another distance from the list. For example, you run 10 kilometers in 40 minutes and 5 seconds. Enter this data in the calculator, click "Calculate finish time", and you will get a forecast for 8 additional distances (and also the data of your current VO2 max level - the maximum oxygen consumption, unit of measure - ml/kg/min).

This calculator calculates according to the available data your maximum oxygen consumption level (VO2 max) and then builds a forecast based on the studies of Daniels and Gilbert, given the dependence of the power drop on running time.