Threshold Pace Calculator

Estimate threshold pace from a recent race performance.

Recent race time
Estimated Threshold Pace
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Method and limitations

Race VDOT uses the Daniels/Gilbert equations. Threshold oxygen demand is approximated as 88% of VDOT, then velocity is solved from the positive root of the oxygen-cost quadratic. This is an estimated training pace, not a blood-lactate measurement or universal physiological constant.