Pace converter: min/km, km/h and min/mile

Convert pace and speed instantly and see the time per distance for a fixed pace. To predict race times and training paces, use the magic calculator.

Pace from race time

Enter distance and time: pace and speed appear instantly and the converter below follows.

Pace

5:00 /km

Speed

12.0 km/h

Estimated race times by distance

1 km5:00
5 km25:00
10 km50:00
Half Marathon1:45:29
Marathon3:30:59

Want to predict your race time and training paces?

That is the magic calculator's job: from a recent result it estimates your Magic Index, predicts times at other distances and sets the pace for every workout.

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Understanding pace.

Pace (or tempo) is the measure of time needed to cover 1 kilometer (or 1 mile in countries using the imperial system). It is the most used metric by runners to control training intensity.

In Brazil and most countries, we use min/km — for example, running at 5:30/km means taking 5 minutes and 30 seconds to cover 1 kilometer.

Garmin, Polar and Suunto devices display pace in min/km by default. International apps like Strava frequently use km/h or min/mile for global audiences.

Pace and intensity.

Running paces are split into intensity zones. Each zone has a specific purpose in training.

Recovery65%

Very easy runs for active recovery

Easy76%

Aerobic runs that build base endurance

Marathon85%

Specific pace for marathon racing

Threshold100%

Pace at the anaerobic/lactate threshold

Interval112%

Workouts to maximize VO2max

Repetition130%

Workouts for power and running economy

The percentage shows effort relative to threshold pace (100%). Use the magic calculator to get the exact paces for each zone at your level.

Why pace changes everything.

Beginner runners tend to head out at a pace that feels comfortable — and two kilometers later they're on the side of the road, gasping for air. The reason is almost always the same: a starting pace too fast for their current aerobic level.

Controlling your pace isn't just for elite athletes. It's for anyone who wants to finish workouts without unnecessary suffering, avoid overexertion injuries and, progressively, run faster at a lower perceived effort.

The golden rule: 70-80% of your weekly training volume should be at an easy, conversational pace. The remaining 20-30% is your quality work — intervals, tempo runs, progression runs — where pace matters with surgical precision.

Pace chart.

Finish times for 5K, 10K, half marathon and marathon at every pace from 3:00 to 8:00 per km.

Pace per km with speed and race finish times
Pacekm/h5 km10 kmHalf MarathonMarathon
3:00 /km20.015:0030:001:03:182:06:35
3:15 /km18.516:1532:301:08:342:17:08
3:30 /km17.117:3035:001:13:502:27:41
3:45 /km16.018:4537:301:19:072:38:14
4:00 /km15.020:0040:001:24:232:48:47
4:15 /km14.121:1542:301:29:402:59:20
4:30 /km13.322:3045:001:34:563:09:53
4:45 /km12.623:4547:301:40:133:20:26
5:00 /km12.025:0050:001:45:293:30:59
5:15 /km11.426:1552:301:50:463:41:31
5:30 /km10.927:3055:001:56:023:52:04
5:45 /km10.428:4557:302:01:194:02:37
6:00 /km10.030:001:00:002:06:354:13:10
6:15 /km9.631:151:02:302:11:524:23:43
6:30 /km9.232:301:05:002:17:084:34:16
6:45 /km8.933:451:07:302:22:244:44:49
7:00 /km8.635:001:10:002:27:414:55:22
7:15 /km8.336:151:12:302:32:575:05:55
7:30 /km8.037:301:15:002:38:145:16:28
7:45 /km7.738:451:17:302:43:305:27:01
8:00 /km7.540:001:20:002:48:475:37:34

Pace reference table.

Reference paces by runner level. Use them to see where you stand and set goals.

Level5km pace10km paceHalf marathon paceMarathon pace
Beginner7:00–8:007:30–8:308:00–9:008:30+
Intermediate5:30–6:305:45–6:456:00–7:006:15–7:15
Advanced4:30–5:154:45–5:305:00–5:455:15–6:00
Amateur elite<4:00<4:15<4:30<4:45

Where runners get pace wrong.

Going out too fast in the first km

Early enthusiasm in a race or workout costs you dearly at the end. Start 10-15 seconds per km slower than your target pace. Your body warms up progressively and you finish stronger.

Confusing training pace with race pace

Easy runs should feel comfortable — 60-90 seconds slower than your 5km pace. Running your easy days too fast builds accumulated fatigue with no performance gain.

Ignoring the km/h conversion

Garmin and Polar use min/km, but treadmills and bikes usually display km/h. Knowing how to convert in seconds prevents wrong speed adjustments mid-workout.

Frequently asked questions.

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