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Formula

The calculator works out your average pace and speed for a given distance and finish time. The formulas are:

• Pace = finish time (minutes) ÷ distance (km) → result in minutes per kilometer (min/km)
• Speed = distance (km) ÷ (finish time (minutes) ÷ 60) → result in kilometers per hour (km/h)

Where:

• t = finish time in minutes (e.g., 50 minutes)
• d = distance in kilometers (e.g., 10 km)

Worked Example

Using the default values: t = 50 minutes, d = 10 km.

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

So the average pace is 5.00 min/km and the average speed is 12.00 km/h.

When to Use This Calculator

Use this calculator when you want to know your running or cycling pace for a race, training run, or commute. Enter the total time and distance, and you get the pace (how many minutes each kilometer takes) and speed (how many kilometers you cover in an hour). This helps you set realistic goals, plan pacing for a race, or compare different workouts.

How to Read the Result

The pace result tells you the time per kilometer. A lower pace number means faster running (e.g., 4:30 min/km is faster than 6:00 min/km). The speed result is the average speed in km/h. For most recreational runners, a pace between 5 and 7 min/km is common, while elite runners may go below 3 min/km. If you use miles, convert distance to kilometers first (1 mile = 1.60934 km).

Common Mistakes

• Unit mix-ups: Entering time in hours instead of minutes, or distance in miles instead of kilometers, will give wrong results. Convert everything to minutes and kilometers first.
• Rounding too early: If you round the pace to 5.0 min/km and then use that to calculate speed, you may get a slightly different number. The calculator uses the exact inputs.
• Ignoring rest stops: The calculator assumes the time is the total moving time, not including breaks. For a race, use your chip time (actual running time) if you want pacing accuracy.

Limitations of the Formula

The formula assumes a constant pace throughout the entire distance. In reality, your pace may vary due to hills, wind, fatigue, or traffic. This calculator gives an average, not a detailed split. For interval training or varied terrain, you would need a GPS watch or app that records per-kilometer splits.

Frequently Asked Questions

How do I convert pace to speed?

Speed (km/h) = 60 ÷ pace (min/km). For example, a 5:00 min/km pace equals 60 ÷ 5 = 12 km/h. Conversely, pace = 60 ÷ speed. This calculator does the conversion for you.

What is a good running pace for a beginner?

For a beginner, a comfortable pace might be between 6:30 and 8:00 min/km (roughly 7.5 to 9.2 km/h). It depends on age, fitness, and terrain. The key is to maintain a pace where you can hold a conversation without gasping.

Can I use this for walking?

Yes. Walking pace typically ranges from 10 to 15 min/km (4 to 6 km/h). The calculator works the same way for any activity where you cover distance over time.

How do I calculate pace for a marathon?

For a marathon (42.195 km), enter the target finish time in minutes (e.g., 4 hours = 240 minutes) and the distance as 42.195 km. The calculator will give you the average pace per kilometer needed to finish in that time.

What if I run in miles?

Convert miles to kilometers by multiplying by 1.60934. For example, a 5-mile run is 8.0467 km. Enter the distance in km and the time in minutes, and the calculator will handle the rest.

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