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Running pace calculator
Put your distance and time in: a 5 km run in 30 minutes is 6 min/km, 10 km/h, 9.66 min/mile.
★ SPORTS · RUNNING · PACE
Running Pace Calculator: 6 Min/Km for a 5K in 30 Minutes
On the defaults — 5 km in 30 minutes — you run 6 min/km, 10 km/h, 9.66 min/mile. This is the running pace tool: put in the distance and the time, and get the pace, the speed and the per-mile figure in one pass — the three numbers every training plan asks for.
What does running pace 6 min/km mean?
It means every kilometre of the run takes 6 minutes on average: 5 km at that pace takes 30 minutes, and the same runner covers 10 km in an hour. Pace is time divided by distance, so it answers how long each kilometre takes, while speed answers how many kilometres each hour covers — the two are reciprocals, and this page gives both plus the per-mile pace, since many training plans still speak in miles.
Output · formula · meaning
| Output | Formula | What it means |
|---|---|---|
| Pace | time ÷ distance | 6 min/km — 30 ÷ 5. |
| Speed | distance ÷ hours | 10 km/h — 5 ÷ 0.5. |
| Pace per mile | pace × 1.61 | 9.66 min/mile — 6 × 1.61. |
Three things to check before you trust the number
First, measure the distance on the course you actually run, not the distance on a race poster: a phone GPS can read a route long or short by a few percent, and a short course flatters the pace. Second, time the run itself, not the warm-up, the cool-down or the stops at crossings — a watch that auto-pauses changes the time and therefore the pace. Third, remember the pace is an average: a fast first kilometre and a slow fifth still average 6 min/km, so splits matter more than the headline for race day. For the walking comparison, the running vs walking calculator sets the same distance side by side.
Worked example
5 km, 30 minutes. Pace: 30 ÷ 5 = 6 min/km. Speed: 5 km in 0.5 hours = 10 km/h. Per mile: 6 × 1.61 = 9.66 min/mile. In practice that means kilometre splits near 6:00 each — a 6:00 first kilometre and a 6:00 fifth kilometre average out the same, whatever the middle kilometres did, so the watch average and the split average should agree.
Every branch, checked
With 10 km instead of 5 km in the same 30 minutes, the pace quickens to 3 min/km, 20 km/h, 4.83 min/mile — elite territory, and a warning that the inputs may be off. With 45 minutes instead of 30 over the same 5 km, the pace slows to 9 min/km, 6.67 km/h, 14.48 min/mile. With 3 km instead of 5 km in 30 minutes, the pace is 10 min/km, 6 km/h, 16.09 min/mile. With 60 minutes over 5 km, the pace is 12 min/km, 5 km/h, 19.31 min/mile — a brisk walk by most measures. Distance and time pull the pace in opposite directions, so a wrong figure in either shows up at once.
The reverses, worked backwards
The distance behind 6 min/km is 5 km: at 3 km the pace is 10 min/km (3 km in 30 minutes, 6 km/h, 16.09 min/mile); at 8 km it is 3.75 min/km (8 km in 30 minutes, 16 km/h, 6.04 min/mile). The time behind 6 min/km is 30 minutes: at 20 minutes the pace is 4 min/km (5 km in 20 minutes, 15 km/h, 6.44 min/mile); at 40 minutes it is 8 min/km (5 km in 40 minutes, 7.5 km/h, 12.87 min/mile). Each reverse moves one input and holds the rest, so the step is exactly one distance or time change.
What the defaults assume
The defaults assume a flat 5 km run completed in 30 minutes of running time, with no stops, no warm-up and no cool-down counted. Hills, heat, trail surfaces and stop-start city running all slow the real pace below the flat-course figure — treat 6 min/km as the course pace, and the watch average as the truth.
Who uses this
- A runner training for a first 5K: the 6 min/km pace turns a 30-minute goal into kilometre splits to hit on the day.
- A coach setting a session: the pace, speed and per-mile figures off the calculator are the lines on the session plan, not a guess.
- A charity-run organiser: the pace for the course distance gives finish-time brackets for marshals and road closures.
- A walker comparing a run with a walk: the same distance at walking pace shows exactly what running buys in minutes saved.
Accuracy & limitations
The arithmetic is exact for the inputs entered; the judgement is the distance and the clock. A phone GPS can read a 5 km route long or short by a few percent, and a watch that auto-pauses at crossings changes the time — the measured course and the stopwatch override any planning figure. Treat 6 min/km as the pace for 5 km in 30 minutes, and check both inputs on the day before quoting it.
Cite this calculator
Bright Side Kit, “Running Pace Calculator: 6 Min/Km for a 5K in 30 Minutes”, https://brightoolbox.com/running-pace-calculator/, accessed 3 November 2026. Students and researchers: cite the calculator name, the page URL and the date you used it, and quote the defaults (5 km, 30 minutes) so the 6 min/km result can be checked.
Frequently asked questions
What is a good running pace for 5K?
A 30-minute 5K is 6 min/km. Anything under 30 minutes beats that pace; a first 5K nearer 35 to 40 minutes is 7 to 8 min/km, and both are respectable finishes.
How do I calculate running pace?
Divide the time by the distance: 30 minutes ÷ 5 km = 6 min/km. The same run at 10 km/h covers each kilometre in 6 minutes, since speed and pace are reciprocals.
What is the difference between pace and speed?
Pace is minutes per kilometre and speed is kilometres per hour. A faster runner has a lower pace and a higher speed: 6 min/km is 10 km/h, while 5 min/km is 12 km/h.
How do I convert min/km to min/mile?
Multiply by 1.61, since a mile is 1.61 km: 6 min/km × 1.61 = 9.66 min/mile. A 6 min/km runner therefore runs each mile in about 9 minutes 40 seconds.
Why is my watch pace different from this calculator?
Because the watch measures a GPS distance and a clock that may auto-pause, while this calculator divides the distance you enter by the time you enter. A short GPS course or a paused clock both move the watch pace away from the true course pace.
What pace do I need for a sub-30 5K?
Faster than 6 min/km: 29 minutes over 5 km is 5.8 min/km. Each minute under 30 shaves 0.2 min/km off the pace, so 28 minutes is 5.6 min/km.