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06 Numbers and Powers

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Card No. 06·59078 · Updated · Standard formula, shown below

Average pace 5.00 min/km
Average speed
12.00 km/h
Result
Finish time
50 min
You entered
Distance
10 km
You entered
You enter
Finish time, Distance
You get
Average pace, Average speed
Rounding
2 dp

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Formula

The calculator above works out your average running pace and speed from a finish time and distance. The formulas are:

  • Pace = Finish time (minutes) ÷ Distance (km) → result in min/km
  • Speed = Distance (km) ÷ (Finish time (minutes) ÷ 60) → result in km/h

Variables: t = finish time in minutes, d = distance in kilometers. Pace is the number of minutes it takes to cover one kilometer; speed is how many kilometers you cover in one hour.

Worked Example

Using the default values (50 minutes for 10 km):

  1. Pace = 50 ÷ 10 = 5.00 min/km
  2. Speed = 10 ÷ (50 ÷ 60) = 10 ÷ 0.8333 = 12.00 km/h

The calculator shows 5.00 min/km and 12.00 km/h.

When to Use This Calculator

Use it to check whether you hit your target pace in a training run or race. Enter any finish time and distance — a 5K, 10K, half marathon, or a treadmill session — and you get the pace you held and the average speed. This is useful for setting realistic goals: if you want to run a 10K in under 50 minutes, you need to hold a pace faster than 5:00 per km.

How to Read the Result

The pace result is the most intuitive for runners: a lower number means faster. A pace of 4:30 per km is quicker than 5:00 per km. Speed in km/h is more familiar to cyclists or treadmill users. Note that the calculator gives average pace — your actual pace will vary with hills, wind, and fatigue. For a race, aim to run slightly faster than your target average in the first half to build a buffer.

Common Mistakes

  • Mixing units: If you ran in miles, convert to kilometers first (1 mile = 1.609 km) or the pace will be wrong.
  • Using seconds: Enter time in minutes only. 50:30 should be 50.5, not 50.30.
  • Rounding too early: Keep the speed calculation unrounded until the end to avoid a 0.1 km/h error.

Limitations of the Formula

This is a pure arithmetic average. It does not account for elevation gain, running surface, or heart rate. For interval training, you need a separate pace for each repeat. Also, the formula assumes constant speed — if you walk or stop, your actual moving pace will be faster than the overall average. For training zones, consult a coach or use a heart-rate monitor.

Frequently Asked Questions

What is a good running pace for a beginner?

A common beginner 5K pace is around 7:00–8:00 per km (11–13 km/h). For a 10K, most recreational runners finish between 6:00 and 7:00 per km. These are general ranges — what’s “good” depends on your age, fitness, and experience.

How do I convert my pace from min/km to min/mile?

Multiply the min/km pace by 1.609. So a 5:00 min/km pace is 5 × 1.609 = 8:03 per mile. To convert speed, multiply km/h by 0.6214 to get mph.

Does this calculator work for walking?

Yes, the math is the same. A typical walking pace is 10–12 min/km (5–6 km/h). Just enter your walking time and distance.

Why is my GPS pace different from this calculation?

GPS devices measure instantaneous pace with satellite data and may include pauses or slight position errors. This calculator uses total time and total distance, which is the most accurate way to measure average pace over a route.

Can I use this to plan a race pace?

Yes. If you know your target finish time, enter it with the race distance to see the exact pace you need to hold. For example, a 1:45 half marathon (21.1 km) requires a pace of about 4:58 per km.

Related

Formula used
in t | Finish time | min | 50 | 0
in d | Distance | km | 10 | 0 | 100000
out pace | Average pace | min/km | t / d | 2
out speed | Average speed | km/h | d / (t / 60) | 2

Each line is one input (in, sel, list) or one result (out: label, unit, formula, decimals). How the calculators work

Method: the standard formula for this calculation, rounded as each result states. See how the calculators work or report an error.

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