📌 Overview

Calculate running pace, finish time or distance — fill in any two and get the third, with split times for common race distances.

🏃 Running Pace Calculator

Calculate running pace, finish time or distance — fill in any two and get the third, with split times for common race distances.

Calculate

Hours

Minutes

Seconds

Distance (km)

🔒 All processing happens in your browser. No data is uploaded to any server.

📋 How to Use

Choose what you want to calculate.
Fill in the two values you know.
Click Calculate.
Check the race predictions table below the result.

❓ FAQ

What is a good pace?

It depends entirely on experience. Many recreational runners sit around 6:00–7:00 min/km for easy runs; the point is consistency, not comparison.

How are the race predictions made?

They apply your entered pace evenly across each distance. Real races slow down over longer distances, so treat longer predictions as optimistic.

❓ More Questions

What counts as a good pace?

It depends entirely on your training level. Casual runners' easy pace is often 6:00-7:00 per km; what matters is consistency, not comparing with others.

Is the finish-time prediction accurate?

It assumes the pace you entered held steady. Real races slow more over longer distances, so a full marathon prediction is usually optimistic; leave a margin.

💡 Use Cases

🏅

Race Goal

Find the pace needed for a target time.

📉

Training

Set easy and tempo run paces.

⏱️

Splits

Check per-kilometre targets.

🔗 Related Tools

📖 Deep Dive: Running Pace Calculator

What pace means

Pace is the time to run each kilometer, usually written as minutes:seconds per km. It is more intuitive than speed (km/h): seeing 5:30 tells you each km takes 5 minutes 30 seconds.

How the three relate

Pace = total time divided by distance; total time = pace times distance; distance = total time divided by pace. Knowing any two gives the third - that is the core logic of this tool.

Common race distances

At a 6:00 per km pace: 5 km about 30 minutes, 10 km about 1 hour, half marathon (21.0975km) about 2 hours 7 minutes, full marathon (42.195km) about 4 hours 13 minutes.

Pace zones in training

Easy run: can talk normally, 70%-80% of total training volume.

Tempo run: a bit hard but holdable for 20-40 minutes.

Interval run: near max, repeated in short bursts.

Always running fast is the most common amateur mistake and a major source of injury.

Reminder

This tool assumes a steady pace; actual results depend on terrain, weather, nutrition, and pacing. Use it with your own context.