Running Speed Calculator
Running Speed Calculator
Turn pace into km/h and mph so you can compare running speed, treadmill settings and race goal effort.
Pace Converter
Enter your pace
Convert min/km or min/mile into speed and race finish times.
Quick presets
min/km
5:00
min/mile
8:03
km/h
12.00
mph
7.46
Estimated race finish times
| Race | Finish |
|---|---|
| 5K | 25:00 |
| 10K | 50:00 |
| Half Marathon | 1:45:29 |
| Marathon | 3:30:59 |
Compare pace as speed
Speed is useful when a treadmill, bike-style workout note or race target is written in km/h or mph instead of pace.
Enter a pace to see the matching speed, then compare it with common 5K, 10K, half marathon and marathon goals.
Speed conversion examples
5:00/km pace
12.0 km/h
Also about 7.46 mph, a useful steady speed reference.
8:00/mile pace
7.5 mph
Also about 12.1 km/h for metric treadmill settings.
20 minute 5K
15.0 km/h
A useful speed benchmark for faster 5K goals.
When speed is more useful than pace
- You know the pace but need km/h or mph.
- You want to compare two race goals by average speed.
- A treadmill session is written in speed instead of pace.
- You are checking whether a target speed matches current fitness.
Running Speed Zones
Use these speed zones as a simple guide for comparing running speed with common experience levels.
| Speed | Runner Type |
|---|---|
| 8 km/h | Beginner |
| 10 km/h | Recreational |
| 12 km/h | Intermediate |
| 14 km/h | Advanced |
What speed do common race goals require?
These targets show the average speed required from start to finish. Hills, stops and pacing changes mean race-day speed will not feel perfectly even.
| Goal | Required speed km/h | Required speed mph | Pace |
|---|---|---|---|
| 20 min 5K | 15.00 | 9.32 | 4:00/km |
| 25 min 5K | 12.00 | 7.46 | 5:00/km |
| 30 min 5K | 10.00 | 6.21 | 6:00/km |
| 45 min 10K | 13.33 | 8.28 | 4:30/km |
| 2 hour half marathon | 10.55 | 6.55 | 5:41/km |
| 4 hour marathon | 10.55 | 6.55 | 5:41/km |
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Frequently asked questions
How do I calculate running speed?
Running speed can be calculated from running pace by converting minutes per kilometre into kilometres per hour or miles per hour.
What is a good running speed?
A good running speed depends on fitness and experience level. Recreational runners commonly run between 8 and 14 km/h.
How fast is 5 min/km?
A pace of 5 minutes per kilometre equals approximately 12 km/h or 7.46 mph.
What speed is 4:00 per kilometre?
A pace of 4:00 per kilometre equals 15 km/h or about 9.32 mph.