How it works
VDOT (from your recent race) → training paces → periodised volume ramp with cutback weeks and a taper.
This page keeps the calculation centered on one relationship: VDOT (from your recent race) → training paces → periodised volume ramp with cutback weeks and a taper.. 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. Next steps: related calculator 1, related calculator 2, related calculator 3. Keep the fixed reference values in view: 2–3, 3, 12, 6, 20, 4–5, 6 m, 20 m.
Sources
- Daniels — phases, paces and periodisation Jack Daniels, “Daniels' Running Formula,” 3rd ed., Human Kinetics (2014). Source for the Base/Build/Peak/Taper structure and the E/M/T/I training paces derived from VDOT.
- ACSM — progression of training load American College of Sports Medicine, “ACSM’s Guidelines for Exercise Testing and Prescription,” 11th ed. (2021). Basis for the conservative ~10%-per-week volume progression and recovery (cutback) weeks.
- Daniels–Gilbert VDOT model Jack Daniels & Jimmy Gilbert, “Oxygen Power: Performance Tables for Distance Runners” (1979) — the VDOT that seeds this plan.
- Hal Higdon — marathon plan length & weekly mileage norms Hal Higdon, “Marathon Training Programs” (halhigdon.com): Novice plans run 18 weeks and peak around 30–40 mi/week; intermediate/advanced plans build to roughly 40–55+ mi/week. Source for the population norms on typical plan length and peak weekly mileage (not the runner’s own VDOT-scaled volume, which the calculator computes).
- Boston Athletic Association — marathon training guidance Boston Athletic Association, “Boston Marathon Training” (baa.org). Corroborates the conventional 16–20-week build for typical marathoners and a long run building toward ~20 miles.
FAQ
When should I use the training plan 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. Keep the fixed reference values in view: 16–20, 12, 18–24, 2–3.
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: 30–40 m, 50–65 km, 40–55 m, 65–90 km, 20 m, 32 km, 8–10%, ~30%.
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: 8–10%.
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.
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 Plan training plan calculator cannot see those details. Keep the fixed reference values in view: 1–2.
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.
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. Keep the fixed reference values in view: 18%.
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 plan 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 Plan 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.