5 calculators

Fitness & pace.

Running pace, time, and distance. The training numbers, worked out fast.

Calculate your running pace, time, and distance. Convert between different units and plan your training effectively.

Predict your 5K, 10K, half marathon, and marathon finish times from one recent race result, using the Riegel formula.

Turn your goal race time into per-kilometer or per-mile splits, with even, negative, or positive pacing strategies.

Find out how fit a runner you are: your age-graded score and how your time ranks against parkrun and race-finisher populations.

Build a periodized, week-by-week 5K, 10K, half, or marathon training plan that progresses, cuts back, peaks, and tapers for your race date.