Running calculators that tell you what the number means.

Pace, race predictions, training paces and heart rate zones. Each result comes with what it means for your training and what to do next.

What's your goal?

Any goal time works. You get goal pace, splits, a pace band and the training paces to get there.

Calculators

All calculators →
Pace calculatorPace, time or distance from the other two.Race time predictorOne race in, predicted times from the mile to the marathon.Training pacesEasy, marathon, threshold and interval paces from a recent race.Heart rate zonesFive zones from your max heart rate, using the Norwegian model.Split calculatorEven or negative splits for any goal time.Treadmill paceSpeed and incline converted to outdoor pace.Heat adjustmentHow much to slow down in heat and humidity.

Pace by goal

All goal times →
Most popular
Sub 3:00Sub 3:30Sub 4:00Sub 4:30
Marathon pace chart

Guides

All guides →
How to pace a marathonWhy the first 5 km decide your race, and a simple three-part plan.Zone 2 training explainedWhat easy running does and how to find your zone.
Free Race Pace Plan

Get your free Race Pace Plan. Tell us your race and goal time. You get one PDF with:

  • Goal pace and splits for your race
  • Training paces for all five zones
  • A printable pace band

One email with your plan, then occasional training tips. Unsubscribe any time. Privacy policy