Running tools

Running Calculators

Useful running tools for checking performances, choosing realistic targets, setting training paces and keeping the maths under control.

Calculator family

Choose the calculation you need.

Each tool answers one clear running question: how fast, how far, what pace, or what target comes next.

Compare 2K, 5K, 10K, half marathon and marathon times across age and sex using age-grade standards.

Choose a target time, such as sub-20 for 5K, and see the pace, speed and splits required to get there.

Use a recent race performance to estimate recovery, easy, steady, tempo, threshold and interval training paces.

Enter a recent race result and estimate likely 1 mile, 5K, 10K, half-marathon and marathon equivalents.

Enter a distance and time to calculate min/km, min/mile, average speed and useful split times.

Calculate exact 200m, 400m, 800m, 1km, mile or custom splits for a target race time.

Pace chart library

Use the pace charts when you already know your target time and want the race pace, track splits and treadmill speed at a glance.

Pace chart

Marathon finish times from 2:45 to 6:00 with kilometre and mile pace, halfway and cumulative race checkpoints.

Pace chart

5K finish times from 15:00 to 40:00 with pace per km, pace per mile, track splits, treadmill speed and matching plans.

Pace chart

10K finish times from 30:00 to 1:20 with kilometre and mile pace, useful splits, treadmill speed and matching plans.

Pace chart

Half-marathon finish times from 1:05 to 3:00 with exact race pace, useful splits and matching target-time plans.