How to use the running pace calculator
Pace, time and distance are locked together: if you know any two of them, the third is fixed. This calculator lets you choose which one you want to find, so the same tool answers three everyday running questions — “how fast did I run?”, “how long will this take?” and “how far can I go?”.
- Choose what to solve for. Select Pace to find your average pace from a finished run, Time to predict a finish time at a planned pace, or Distance to see how far a given pace takes you in a set time.
- Enter the two values you know. Type time as h:mm:ss or mm:ss (for example
1:52:30or24:45), and pace as m:ss. Use the quick buttons for common race distances. - Read your results. You get pace per kilometre and per mile, speed in km/h and mph, finish times for standard race distances at that pace, and a full split table you can switch between kilometres and miles.
The running pace formula
All pace calculations come from one simple relationship. Pace is the time it takes to cover one unit of distance, so:
time = pace × distance
distance = time ÷ pace
The only difficulty is that time is written in a base-60 format. The reliable way to do the maths by hand is to convert everything to seconds first, divide or multiply, and then convert back.
Worked example: pace from a 10K time
You ran 10 km in 52:30. That is 52 × 60 + 30 = 3,150 seconds. Divide by 10 km: 315 seconds per km, which is 5 minutes 15 seconds, so your pace is 5:15 per km. For pace per mile, divide by the distance in miles instead: 10 km = 6.214 miles, and 3,150 ÷ 6.214 = 507 seconds = 8:27 per mile.
Worked example: finish time from a goal pace
You want to run a half marathon (21.0975 km) at 5:40 per km. 5:40 is 340 seconds; 340 × 21.0975 = 7,173 seconds, or 1:59:33. That pace just gets you under two hours — with almost no margin for the extra distance most runners cover weaving through a crowd.
Remember the 1.609 factor. One mile is exactly 1.609344 km. To turn a per-km pace into a per-mile pace, multiply by 1.609; to go the other way, divide. Our pace converter does this for any pace in one step.
Running pace chart: finish times by pace
This chart shows the finish time for the four most popular race distances at paces from 3:30 to 8:00 per kilometre. Find the row closest to your pace to see what it means over each distance.
| Pace /km | Pace /mile | km/h | 5K | 10K | Half | Marathon |
|---|---|---|---|---|---|---|
| 3:30 | 5:38 | 17.1 | 17:30 | 35:00 | 1:13:50 | 2:27:41 |
| 3:45 | 6:02 | 16.0 | 18:45 | 37:30 | 1:19:07 | 2:38:14 |
| 4:00 | 6:26 | 15.0 | 20:00 | 40:00 | 1:24:23 | 2:48:47 |
| 4:15 | 6:50 | 14.1 | 21:15 | 42:30 | 1:29:40 | 2:59:20 |
| 4:30 | 7:15 | 13.3 | 22:30 | 45:00 | 1:34:56 | 3:09:53 |
| 4:45 | 7:39 | 12.6 | 23:45 | 47:30 | 1:40:13 | 3:20:26 |
| 5:00 | 8:03 | 12.0 | 25:00 | 50:00 | 1:45:29 | 3:30:58 |
| 5:15 | 8:27 | 11.4 | 26:15 | 52:30 | 1:50:46 | 3:41:31 |
| 5:30 | 8:51 | 10.9 | 27:30 | 55:00 | 1:56:02 | 3:52:04 |
| 5:45 | 9:15 | 10.4 | 28:45 | 57:30 | 2:01:19 | 4:02:37 |
| 6:00 | 9:39 | 10.0 | 30:00 | 1:00:00 | 2:06:35 | 4:13:10 |
| 6:15 | 10:04 | 9.6 | 31:15 | 1:02:30 | 2:11:52 | 4:23:43 |
| 6:30 | 10:28 | 9.2 | 32:30 | 1:05:00 | 2:17:08 | 4:34:16 |
| 6:45 | 10:52 | 8.9 | 33:45 | 1:07:30 | 2:22:24 | 4:44:49 |
| 7:00 | 11:16 | 8.6 | 35:00 | 1:10:00 | 2:27:41 | 4:55:22 |
| 7:15 | 11:40 | 8.3 | 36:15 | 1:12:30 | 2:32:57 | 5:05:55 |
| 7:30 | 12:04 | 8.0 | 37:30 | 1:15:00 | 2:38:14 | 5:16:28 |
| 7:45 | 12:28 | 7.7 | 38:45 | 1:17:30 | 2:43:30 | 5:27:01 |
| 8:00 | 12:52 | 7.5 | 40:00 | 1:20:00 | 2:48:47 | 5:37:34 |
What is a good running pace?
“Good” depends entirely on your experience, age and goals, and the most useful comparison is with your own previous runs. That said, it helps to know what different paces represent in practice. The ranges below describe typical easy-run paces, which are deliberately slower than race pace.
| Runner | Typical easy pace | What it looks like |
|---|---|---|
| New runner (first months) | 6:45–8:30 /km (10:50–13:40 /mi) | Often run-walk intervals; the goal is time on feet, not speed. |
| Regular recreational runner | 5:45–6:45 /km (9:15–10:50 /mi) | Runs 3–4 times per week; 10K race around 50–60 minutes. |
| Experienced club runner | 4:50–5:45 /km (7:45–9:15 /mi) | Structured training; 10K race around 38–48 minutes. |
| Competitive / sub-elite | 4:00–4:50 /km (6:25–7:45 /mi) | High weekly volume; 10K race under about 35 minutes. |
Notice how much slower easy pace is than race pace for every group. A runner who races 10K at 5:00/km will usually do their easy runs at 6:00–6:30/km. If all your runs are at the same “medium-hard” pace, the VDOT training pace calculator will show you how to spread them across the right intensities.
Pace vs speed: which should you use?
Pace (minutes per km or mile) is the language of running because it maps directly onto split times and course markers. Speed (km/h or mph) is what treadmills, cyclists and most sports science papers use. They are simply reciprocals:
5:30 /km = 5.5 min → 60 ÷ 5.5 = 10.9 km/h
One consequence of this reciprocal relationship is that equal changes in speed do not give equal changes in pace. Going from 10 to 11 km/h improves pace by 33 seconds per km, while going from 15 to 16 km/h improves it by only 15 seconds. That is why the last few seconds per km are always the hardest to find.
Why your pace changes from run to run
Heat and humidity
Warm conditions raise heart rate and sweat loss at the same pace. Expect easy runs to be noticeably slower on hot days, and adjust race goals on hot race mornings.
Hills and terrain
Uphills cost far more time than downhills give back. Trails, sand and grass are slower than roads for the same effort. Judge hilly runs by effort, not pace.
GPS error
Watches can over- or under-measure by 1–3 %, more under trees or tall buildings. Use measured courses or tracks when an accurate pace really matters.
Fatigue and recovery
Poor sleep, a hard session the day before or accumulated training load all make the same pace feel harder. That is normal, and a reason to keep easy days easy.
How to use pace in your training
Knowing your current pace is the first step; the next is using different paces on purpose. Most well-structured training plans mix a lot of easy running with smaller doses of faster work:
- Easy runs build your aerobic engine with low injury risk. Use the heart rate zone calculator to keep them genuinely easy.
- Tempo or threshold runs at “comfortably hard” pace raise the speed you can hold for long periods.
- Intervals at around 3K–5K race pace improve your maximum aerobic capacity.
- Race-pace practice teaches you the exact rhythm of your goal. Find your target with the race time predictor, then print a pace band for race day.
Coming back to running or new to it? The run-walk calculator plans walk breaks. Planning a specific target? Our goal pace charts give ready-made splits, training paces and sample workouts for dozens of popular 5K, 10K, half marathon and marathon goals.
Last reviewed: September 2026 · Health disclaimer