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Formula
The calculator works out your average pace and speed for a run, ride, or walk. You enter the finish time in minutes and the distance in kilometers. The formulas are:
- Average pace (min/km) = finish time (minutes) ÷ distance (km)
- Average speed (km/h) = distance (km) ÷ (finish time (minutes) ÷ 60)
Variables: t = finish time in minutes, d = distance in kilometers. Pace is the time it takes to cover one kilometer; speed is how many kilometers you cover in one hour.
Worked Example
Using the default values: finish time = 50 minutes, distance = 10 km.
- Pace = 50 ÷ 10 = 5.00 min/km
- Speed = 10 ÷ (50 ÷ 60) = 10 ÷ 0.8333 = 12.00 km/h
So a 50-minute, 10 km run gives an average pace of 5:00 per kilometer and an average speed of 12 km/h.
When to Use This Calculator
Use this tool when you want to know your training pace for a specific distance, compare two runs of different lengths, or set a target pace for an upcoming race. For example, if you plan to run a half marathon (21.1 km) in 2 hours, enter 120 minutes and 21.1 km to see what pace you need to hold. The result tells you whether that goal is realistic based on your current fitness.
You can also use it in reverse: enter a comfortable pace and a distance to see what finish time that implies. This helps with interval training, where you want to hit a specific pace for each repeat.
How to Read the Results
The first output, average pace, is the number most runners and cyclists use. A lower pace (e.g., 4:30 min/km) means faster; a higher pace (e.g., 6:15 min/km) means slower. The second output, average speed, is more common in countries that use miles or for cycling. Both are simply two ways of expressing the same effort.
Note that this calculator gives your overall average, not your moving time. If you stop for traffic lights or water breaks, your actual running pace will be faster than the average shown here. Many GPS watches report both, and the difference can be significant on hilly or urban routes.
Common Mistakes
- Mixing units: Entering distance in miles but time in minutes will give a pace per mile, not per km. Convert miles to km by multiplying by 1.60934.
- Using seconds in the time field: The calculator expects minutes only. If your time is 1:05:30, convert to 65.5 minutes (1 hour = 60 min, plus 5 min, plus 30 sec = 0.5 min).
- Rounding too early: If you round the pace to 5.0 min/km and then multiply by distance, you might get a finish time that is off by a minute or more. Keep full precision until the final step.
- Ignoring elevation: This calculator assumes flat terrain. Uphill segments will slow your pace, so your actual effort may be higher than the number suggests.
Limitations of the Formula
The pace formula is simple arithmetic and works for any distance and time. However, it does not account for:
- Stops, traffic, or terrain (as mentioned above).
- Wind resistance, which matters more at higher speeds.
- Heart rate or perceived effort – two runs with the same pace can feel very different depending on fatigue and weather.
For training purposes, use this as a baseline, then adjust based on how you feel. If you are using it to plan a race, remember that most runners slow down slightly in the second half, so aim for a pace that is a few seconds per km slower than your goal average.
Frequently Asked Questions
What is a good running pace?
A “good� pace depends on age, gender, fitness level, and distance. For a recreational runner, 6:00–7:00 min/km is common for a 10k. Competitive runners might do 4:00–5:00 min/km. Use this calculator to find your current average, then compare with age-graded tables online for a more personalized benchmark.
How do I convert pace to speed?
Speed (km/h) = 60 ÷ pace (min/km). For example, a 5:00 min/km pace is 60 ÷ 5 = 12 km/h. Conversely, pace (min/km) = 60 ÷ speed (km/h). The calculator does this for you.
What is the difference between pace and speed?
Pace is time per unit distance (min/km), while speed is distance per unit time (km/h). Pace is more intuitive for running because it tells you how long each kilometer takes. Speed is more common in cycling and driving.
Can I use this for walking?
Yes. Enter your walking time and distance. A typical walking pace is 10–12 min/km (5–6 km/h). The formula works for any activity where you cover a distance over time.
How do I calculate pace for miles?
Multiply the distance in miles by 1.60934 to get kilometers, then use the calculator. Or, if you want pace per mile, divide the time in minutes by the distance in miles. The result will be min/mile, which is a different unit from min/km.