coach steve / field notes

Put a number to your next goal.

Simple running calculators, with the method and its limits explained.

• Race time and pace calculator

  Use a recent 5K, 10K, half marathon or marathon result to estimate equivalent race times, pace per kilometre and mile, and even splits for your next distance.

• Running pace calculator

  Work out your running pace from a distance and a time, your finish time from a pace, or how far you will go at a pace. Results show per kilometre, per mile and as speed.

• Training pace calculator

  Turn a recent race into the paces for your training: easy runs, long runs, steady runs, threshold sessions, fast repetitions and the jog in between. Each range comes from one estimate of your threshold pace.

• Heart rate zone calculator for runners

  Set your running heart-rate zones from your maximum and resting heart rate: easy, long run, steady, marathon pace, marathon race day and threshold, in beats per minute.

• Marathon fuelling calculator

  Plan the carbohydrate for a race in grams: how many gels to carry, how much to take at each alarm, when to set the alarms and, if you want, how much carbohydrate to eat at breakfast.

• Sweat rate calculator for runners

  Find how much you sweat per hour from one run: weigh yourself before and after, note what you drank, and the calculator gives your sweat rate in litres or fluid ounces per hour.

• Race split calculator

  Turn a goal time for a 5K, 10K, half marathon or marathon into a split for every kilometre or mile, at an even pace or with a slightly faster second half.