The Complete Guide to Running Pace
By Arshi Khan, Founder of Just4Marketing · Last reviewed October 2026
Pace — the time it takes to cover one kilometre or one mile — is the number runners use to plan races, set training zones, and judge progress. This guide explains how pace, time, and distance relate, how to convert between per-kilometre and per-mile pace, and how to use pace to plan a realistic race.
Pace, time, and distance
The three are linked by one relationship: time = pace × distance. Know any two and you can find the third. Pace is the inverse of speed — 5:00 per kilometre is the same as 12 km/h — but runners prefer pace because it maps directly onto a watch: if you need 5:00 per kilometre, every kilometre split should read 5:00.
The calculations only work cleanly in seconds. A pace of 5:30 is 330 seconds, not 5.30 minutes; treating it as a decimal is the most common mistake when working out pace by hand.
Race finish times at common paces
| Pace per km | Pace per mile | 5K | Marathon |
|---|---|---|---|
| 4:00 | 6:26 | 20:00 | 2:48:47 |
| 5:00 | 8:03 | 25:00 | 3:30:59 |
| 6:00 | 9:39 | 30:00 | 4:13:10 |
| 7:00 | 11:16 | 35:00 | 4:55:22 |
Using pace to plan a race
Start slightly slower
Going out a few seconds per kilometre slower than goal pace usually produces a faster overall time than starting too fast.
Allow for hills and heat
Uphills, wind, and hot weather all cost time. Judge effort on those days rather than chasing a fixed pace.
Use even splits as the target
Most personal bests come from roughly even pacing, or a slightly faster second half.
Check GPS distance
Watches often measure a little long in races because runners don't follow the shortest line. Plan on the official distance.
Frequently asked questions
How do I calculate my running pace?
Divide your total time by the distance. A 10 km run in 50 minutes is 50 ÷ 10 = 5 minutes per kilometre. Convert the time to seconds first if it includes hours, then back to minutes and seconds at the end.
How do I convert min/km to min/mile?
Multiply the per-kilometre pace by 1.609 (there are 1.609 km in a mile). A 5:00 /km pace is about 8:03 per mile. To go the other way, divide the per-mile pace by 1.609.
What is a good running pace for beginners?
Many new runners start between about 6:30 and 8:00 per kilometre (10:30–13:00 per mile). A comfortable pace is one where you could still speak in short sentences; most easy running should feel that way.
Can I run a race at my training pace?
Race pace is usually faster than everyday easy pace for short races and closer to it for marathons. A common approach is to run most training 60–90 seconds per kilometre slower than your 5K race pace.