How the Pace Calculator Works

Choose what you want to solve for using the Solve for buttons — Pace, Time, or Distance. Then fill in the other two fields and the answer appears instantly.

Pace is selected by default. Enter your distance and goal finish time, and your required pace appears in the Pace field.

Three Questions, One Tool

Switch the solve target to answer different questions:

Pace — “What pace do I need to run 10K in 45 minutes?”
Time — “How long does a 15-mile run at 9:00/mi take?”
Distance — “If I run 8:30/mi for 3 hours, how far do I go?”

The green field is always the answer. The other two are your inputs.

Zone Note

Below the inputs, you’ll see a note describing where the pace falls relative to typical training zones — based on a reference VDOT of 50. Use the VDOT Calculator for your personal zones.

Going Deeper

For a full walkthrough of training pace vs race pace, the VDOT framework, heat and altitude adjustments, and the most common pace-data mistakes, read our Pace Running Calculator guide.