Running Training Plan
There can never be a completely accurate means of predicting race performances,
perhaps if there was many of us wouldn't bother to race.
However, performance calculators can be of real benefit and interest to those
who want to compare and predict their race times across various distances.
The calculator below is based on the work of Peter Riegel, who, many years ago, discovered that race performances and times could be surprisingly accurately predicted according to a fatigue factor. This fatigue factor is simply a constant multiple applied from one (known) performance to the other (predicted) performance. Most race time predictors found online use the same formula.
We have found that using the typical fatigue factor can produce slightly ambitious estimates especially as the distances increase and have made minor adjustments to suit the average runner.
Race time calculator
Peter Riegel's original article makes very interesting reading for anyone involved in endurance sport: Athletics Records and Human Endurance
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