VDOT Calculator

Enter a recent race time for your VDOT score and your five training paces. Based on Jack Daniels' formula.

Recent race distance

Use a race you ran hard in the last couple of months.

Your VDOT

38.3

Training pacePer kmPer mile
Easy6:19-6:5710:11-11:12
Marathon5:389:04
Threshold5:168:29
Interval4:517:48
Repetition4:367:24
See your row in the VDOT chart

What is VDOT?

VDOT is one number that estimates your aerobic fitness from a recent race. The coach Dr Jack Daniels developed it.

One honest race gives a pace for easy, marathon, threshold, interval and repetition running.

How the five training paces work

EasyAbout 62 to 70% of VDOT
Conversational. The bulk of your weekly running.
MarathonRace pace
The marathon pace your VDOT predicts. Race-pace work for marathoners.
Threshold (tempo)About 88%
Comfortably hard, roughly the pace you could race for an hour.
Interval (VO2max)About 98%
The effort you could hold for 10 to 12 minutes. It raises your aerobic ceiling.
Repetition6 s per 400 m quicker than I
Short and sharp, 200 to 400 m reps, for speed and running economy.

The same numbers as a chart

The VDOT chart shows race times and training paces for every VDOT from 30 to 70.

For a 5K, the training paces by 5K time page lists every time from 15:00 to 40:00. It adds track lap times.