What's the difference between pace per kilometre and pace per mile?
Pace per mile is roughly 60% higher than pace per km because 1 mile = 1.609 km. For example, 5:00 /km equals 8:03 /mile.
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Pace calculator
Pace is the single most important number in running: it ties together your goal, your training zones, your race plan, and your Garmin alerts.
Drop in a distance and a goal time — or a distance and a pace — and this calculator gives you the missing number plus an exact split table at the common race distances. Use it to plan your next workout, set a Garmin pace alert, or send a precise target to your training partner.
Total time
3:30:59
Pace / km
5:00 /km
Pace / mile
8:03 /mi
Use this calculator to plan goal times, set Garmin pace alerts, or share an exact pace target with your training partner.
Pace per mile is roughly 60% higher than pace per km because 1 mile = 1.609 km. For example, 5:00 /km equals 8:03 /mile.
Easy pace is usually 60–90 seconds per km slower than your half-marathon race pace, or roughly 70% of your max heart rate. Easy days are where most athletes train too hard — slow them down on purpose.
The splits assume an even pace. Real marathons are run with a positive split (slowing in the second half) or with a controlled negative split. Use these splits as a target — actual race pacing should account for terrain, heat, and fueling.
Yes. Most triathletes lose 10–25 seconds per km off their open-run pace inside a triathlon. Use this calculator to set your goal pace, then add an offset based on your bike leg intensity.
Your complete training plan is free. Start with your sport, goals and weekly availability.
Ramon Curto designed SportPlan's endurance-training methodology from exercise-physiology principles. SportPlan applies it autonomously to the information you enter and the data you choose to connect; it is not ongoing one-to-one coaching or medical care.
Last revised July 2026