VDOT Calculator: Training Paces & Race Equivalents

How runners use this tool

VDOT is widely used by runners because it turns one race result into a practical fitness score and equivalent race performances, making it useful for both coaching and self-planning.

1. Start with a recent race or time-trial result over a distance you raced honestly.
2. Read the VDOT score first, then review the equivalent performances at other common race distances.
3. Use that score as a current-fitness marker for training paces and goal-setting rather than as a status label.

How to use the result

• Update VDOT after meaningful races so your training targets evolve with fitness.
• Compare equivalent performances against real race history to see whether endurance or speed is the current limiter.
• Treat unusually high VDOT values from short races carefully if you have not proven the same fitness over longer distances.

Formula and assumptions

The calculator uses Jack Daniels-style velocity and time relationships to estimate a VDOT score from race performance.

• Equivalent performances assume balanced development across race distances.
• VDOT is useful for planning, but it is still an estimate rather than a lab test.

Worked examples

• Beginner: 10 km in 60:00 → VDOT score + equivalent race times. Creates a current-fitness baseline.
• Race prep: 5 km tune-up race → Projected 10 km and half marathon equivalents. Guides race-goal selection.
• Advanced: Compare two race blocks → VDOT trend over time. Shows if training is moving fitness in the right direction.

Common questions