How it works
pace(zone) from VDOT at the zone’s % of VO₂ max (Daniels)
This page keeps the calculation centered on one relationship: pace(zone) from VDOT at the zone’s % of VO₂ max (Daniels). Inputs are normalized before the final display, which keeps mile, kilometer, pace, speed, or zone outputs from drifting because of rounding. Use the number as a consistent model output, then layer in terrain, weather, recovery, and race execution. Keep the fixed reference values in view: 59–74%, ~82%, ~88%, 100%, ~3–5, 50, 5, 19:57.
Sources
- Daniels’ training paces Jack Daniels, “Daniels’ Running Formula” (Human Kinetics) — Easy, Marathon, Threshold and Interval paces by VDOT.
- Daniels & Gilbert VDOT Jack Daniels & Jimmy Gilbert, “Oxygen Power: Performance Tables for Distance Runners” (1979) — the VO₂–velocity relationship behind VDOT and the training paces.
- Easy-running intensity Daniels, Daniels Running Formula, 3rd ed. (2013), Human Kinetics — easy/long-run effort at roughly 59–74% of VO₂ max, the basis for the easy pace range; threshold ~88% and interval 100% of VO₂ max.
FAQ
When should I use the training pace calculator?
Use it when you want a fast planning number before a run, race, workout, or gear decision. It gives you a consistent estimate without asking you to create an account.
What inputs matter most?
The best result comes from honest, current inputs. Recent race times, realistic body measurements, accurate workout data, and the correct unit setting matter more than perfect formatting. Keep the fixed reference values in view: 1.5 km, 5, 10.
How should I read the result?
Treat the output as a planning reference, not a promise. Use it to compare options, set a target range, or sanity-check your watch data before making the final call. Keep the fixed reference values in view: 59–74%.
Does this work in miles and kilometers?
Yes. PacerRunning is written for US runners first, so miles are easy to use, but metric conversions are kept alongside them where the tool needs both views. Keep the fixed reference values in view: 88%.
Why might my real-world result differ?
Terrain, wind, heat, sleep, fueling, training fatigue, and measurement error can all move the real outcome away from the estimate. The Training Pace training pace calculator cannot see those details. Keep the fixed reference values in view: 88%, 50, 6:51, 4:15.
Can beginners use it?
Yes. You do not need advanced training knowledge. Enter the numbers you know, read the result as a guide, and keep your effort comfortable when you are unsure. Next steps: related calculator 1. Keep the fixed reference values in view: 88%, 50, 6:51, 4:15.
Can competitive runners use it too?
Yes. Faster runners can use the same output to check pacing, compare workouts, and keep training zones aligned with a recent performance. Next steps: related calculator 1. Keep the fixed reference values in view: 59–74%, 50, 7:52–9:26, 4:54–5:52.
Is this professional advice?
No. The result is general information for training and planning. For medical concerns, injury questions, nutrition treatment, or a personal race plan, work with a qualified professional.
When should I use the training pace calculator?
Use it when you want a fast planning number before a run, race, workout, or gear decision. It gives you a consistent estimate without asking you to create an account.
Training Pace Calculator results are estimates from the entered data and the cited method. They are useful for planning and comparison, but they are not a diagnosis, prescription, guaranteed race result, or substitute for a coach or clinician.