TheMarathon Clinic
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Pace & zone calculator

How should I train?

Your easy, long, marathon, threshold and interval paces, each with the heart rate to match, so your watch and your legs are training the same effort.

Recent effort
::
Units
yrs
bpm (optional)

We’ll send this result to your inbox and keep your numbers with your profile, so a coach can pick up exactly where you are. No spam.

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From your coach

These are the paces your current fitness supports, each with the heart rate to match. Keep the easy days genuinely easy, conversational, and let the harder days earn their effort. Train to the number that agrees with how it feels.
JHJason HuntFounder & Head Coach
Your training paces

Easy

5:185:43/km

117–137bpm

Conversational — full sentences, no strain

Long run

4:585:18/km

122–140bpm

Steady time on feet, never race pace

Marathon

4:36/km

140–157bpm

Goal pace

Threshold

4:254:35/km

157–166bpm

Comfortably hard and controlled

Interval

4:044:12/km

167–180bpm

Hard but repeatable across the reps

Recovery

6:036:38/km

90–108bpm

Genuinely slow — slower than feels right

Heart rates are a % of your estimated max of about 180 bpm (Tanaka, 208 − 0.7·age, more accurate than 220 − age). Add your resting HR for more personal ranges (Karvonen). Paces follow the Daniels model. Estimated max HR varies roughly ±10 bpm between people, so treat the ranges as a guide and adjust to feel.

Lock this in.

Turn this into a full plan, then have a coach watch every run.