4:45 min/km Pace — Half Marathon Speed
A 4:45 min/km pace equals approximately 12.6 km/h and targets a half marathon finish of around 1 hour 40 minutes.
How to use this tool
- Enter pace — minutes and pace — seconds in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your speed and the full breakdown beneath it.
Convert a 4:45 min/km half-marathon race pace to speed in km/h for pacing and treadmill training.
Frequently asked questions
- How do I convert pace to speed?
- Speed (km/h) = 60 ÷ pace (min/km). For example, 5:00/km = 60 ÷ 5 = 12 km/h.
- How do I convert speed to pace?
- Pace (min/km) = 60 ÷ speed (km/h). At 10 km/h, pace = 60 ÷ 10 = 6:00/km.