How running speed is calculated
Speed is distance covered per hour: speed = distance ÷ (time in minutes ÷ 60). Run 5 miles in 50 minutes and your speed is 5 ÷ (50/60) = 6 mph. Dividing minutes by 60 converts the time into hours first.
The division by 60 is the step people skip. Speed must be per hour, so a time given in minutes has to become a fraction of an hour first: 50 minutes is 50 ÷ 60 = 0.833 hours, and 5 ÷ 0.833 = 6 mph. Dividing 5 by 50 instead would return 0.1, which is miles per minute, not mph.
How to use this calculator
Enter the distance in miles and the time in minutes. The result is your average speed in miles per hour. To read the same effort as minutes per mile, use the running pace calculator.
Worked examples: a 5K is 3.1 miles, so a 30-minute parkrun is 3.1 ÷ 0.5 = 6.2 mph. A four-hour marathon is 26.2 ÷ 4 = 6.55 mph. To read the answer in kilometres per hour instead, multiply the mph figure by 1.609 — 6 mph is 9.66 km/h, the number a European treadmill would show.
Speed versus pace
Speed and pace are two views of the same run. Speed (mph) is handy for treadmills and cycling comparisons; pace (min/mile) is the runner's standard. A 6 mph speed is a 10:00 mile. Use whichever your training plan or device prefers.
The link between the two is a single division: speed in mph = 60 ÷ pace in minutes per mile, and it works in both directions. So 6 mph is a 10:00 mile, 7.5 mph is 8:00, 8 mph is 7:30 and 10 mph is a 6:00 mile.
For context, a brisk walk is 3 to 4 mph, an easy jog 5 to 6 mph, a steady recreational run 6 to 7.5 mph and a strong club runner holds 9 to 10 mph over 10K. The result is an average across the whole distance, so a run with hills or walk breaks reads lower than the pace felt while moving. Convert the same effort to minutes per mile with the running pace calculator, or project a race with the marathon time calculator.
Frequently asked questions
- How do I calculate running speed?
- Divide distance by time in hours. 5 miles in 50 minutes is 5 ÷ (50/60) = 6 mph.
- What is a good running speed?
- Recreational runners often average 5–7 mph. Trained runners can sustain 8–10 mph over distance.
- How do I convert pace to speed?
- Divide 60 by your pace in minutes per mile. A 10:00 pace is 60 ÷ 10 = 6 mph.
- Can I use this for walking?
- Yes. The formula works for any pace — a brisk walk is typically 3–4 mph.
- Should I train by speed or by pace?
- Use pace for road running and race planning, since splits and mile markers are read in minutes per mile, and use speed when setting a treadmill or comparing against cycling. They are the same information: divide 60 by one to get the other.