Loona Calculators
Training for a race, or checking what your last run's pace really was? Enter the distance and finish time to get your pace per kilometre and per mile — and see what that same pace predicts for all four classic race distances.
They assume an identical pace at every distance, but real runners slow as distance grows. Treat long-distance predictions as targets to train towards, not guarantees.
Many new runners sit between 6:00 and 7:30 per kilometre. Comfort matters more than the number — you should be able to speak in short sentences at an easy pace.
5K, 10K, the half marathon (21.0975 km) and the marathon (42.195 km) — the official road-race distances — plus any custom distance you type in.