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Formula

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

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

Where Finish time is in minutes, Distance is in kilometers, Pace is in minutes per kilometer, and Speed is in kilometers per hour. For miles, convert distance to km (1 mile = 1.60934 km) or use the pace in min/mile by keeping distance in miles.

Worked Example

Using the default values: finish time = 50 minutes, distance = 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 an average pace of 5.00 min/km and an average speed of 12.00 km/h.

When to Use This Calculator

Use this tool when you have a recorded finish time and a known distance—for example, a 5K, 10K, half marathon, or any training run. It’s helpful for setting realistic goals, comparing performances across different distances, and determining if you’re on pace during a race. Coaches and runners often use pace to plan intervals or estimate finish times for longer events.

How to Read the Result

The pace tells you how many minutes (and seconds) it takes to cover one kilometer. A lower pace means faster running. The speed gives the same performance in kilometers per hour, which is more common in cycling or treadmill settings. For example, a 5.00 min/km pace equals 12.00 km/h—both are equivalent measures of the same effort.

Common Mistakes

• Mixing units: If you enter distance in miles but the formula expects kilometers, the pace will be wrong. Convert miles to km first (multiply by 1.60934).
• Using seconds incorrectly: If your finish time is 50:30 (50 minutes 30 seconds), convert the seconds to decimal minutes (30 ÷ 60 = 0.5) so the total is 50.5 minutes.
• Rounding too early: Keep at least two decimal places during calculations to avoid significant errors in the final pace.

Limitations of the Formula

This calculation assumes a constant speed throughout the run. In reality, runners speed up and slow down due to terrain, weather, and fatigue. The result is an average pace, not a prediction of what you can sustain. Also, the formula works for any distance—just ensure the units are consistent. For very short or very long distances, the average pace may not reflect the effort required due to anaerobic vs. aerobic energy systems.

Frequently Asked Questions

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

Multiply the pace in min/km by 1.60934 to get min/mile. For example, 5.00 min/km × 1.60934 = 8.05 min/mile. Alternatively, use the speed: 12.00 km/h ÷ 1.60934 = 7.46 mph, then convert to min/mile (60 ÷ 7.46 ≈ 8.04 min/mile).

What is a good running pace for a beginner?

There is no single “good� pace—it depends on age, fitness, and experience. A common benchmark for a recreational runner is around 6:00–7:00 min/km (10–9 km/h). Beginners often start slower and gradually increase speed. Focus on effort rather than a fixed number.

Can I use this calculator for walking?

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

How do I calculate my finish time from a target pace?

Multiply your target pace (in min/km) by the race distance (in km). For example, a 5:30 min/km pace for 10 km gives 55 minutes. This calculator does the reverse—it gives pace from time and distance.

Does elevation gain affect the pace calculation?

The formula ignores elevation. A hilly course will make your average pace slower than on flat ground, but the calculator still gives the actual average pace you ran. For training purposes, you might compare paces on similar terrain.

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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