Free training calculators.

The numbers every endurance athlete needs before a race or a block of training, with the coaching behind them. No account, no app, nothing to install.

• Marathon pace calculatorGoal time to pace, a split table, and the training paces that goal implies.
• Ironman and 70.3 finish timeSwim pace, bike speed, run pace and transitions to a finish — and what sub-X takes.
• Heart-rate zonesFive zones from your threshold or max heart rate, with what each one is for.
• Race fuelingCarbs, fluid and sodium per hour for the length and effort of your day.
• Run pace converterMinutes per mile, minutes per km, mph and km/h, and your time over common distances.