Running speed calculator

Speed and pace — two sides of the same coin

Speed (km/h or mph) and pace (min/km or min/mi) describe the same thing from opposite directions. Speed tells you how much distance you cover per unit of time; pace tells you how much time each unit of distance takes. Runners typically think in pace, while treadmills and cycling computers display speed.

To convert: divide 60 by your speed in km/h to get pace in min/km. At 10 km/h that is 6:00 min/km; at 12 km/h it is 5:00 min/km. If you prefer to work directly in min/km, use the pace calculator. To find the speed required to hit a specific finish time, use the target pace calculator.

Common speed benchmarks for running:

• Under 8 km/h — brisk walking / easy jog
• 8 – 10 km/h — comfortable jogging pace
• 10 – 14 km/h — typical recreational running range
• Over 15 km/h — fast running / race pace for most

Frequently asked questions

How do I convert km/h to running pace?

Divide 60 by your speed in km/h to get pace in min/km. At 10 km/h, your pace is 60 ÷ 10 = 6:00 min/km. At 12 km/h, it is 60 ÷ 12 = 5:00 min/km. This calculator handles the conversion automatically.

What speed is a 4-hour marathon?

A 4-hour marathon requires an average speed of about 10.55 km/h, which is a pace of 5:41 min/km. This calculator lets you set any finish time and distance to find the required speed.

Is running speed the same as treadmill speed?

Yes — treadmill speed is typically displayed in km/h or mph, the same unit used here. One consideration: treadmills measure belt speed, not actual ground speed. Setting the incline to 1% more closely replicates the energy cost of outdoor running on flat terrain.

What is a good running speed for a beginner?

Most beginners run comfortably between 7 and 10 km/h (roughly 6:00–8:30 min/km). The most important thing early on is consistency, not speed. Running at a pace where you can hold a conversation — the "talk test" — is a reliable guide to a sustainable effort.