Running Pace Calculator

Training for your first 5K, a 10K, or a marathon in Mumbai, Delhi or Bengaluru? This running pace calculator turns a finish time into your pace per km and speed — or a target pace into a finish time — for any distance. It also gives kilometre splits to pace your race evenly andpredicted times for other distances based on your result, so you can set realistic goals.

How to use it

Choose the distance (or enter your own).
Enter your finish time, or the pace you plan to run.
Use the splits on race day and the predictions to plan your next goal.

Example

A 10K in 58:30 is a pace of 5:51 per km (10.3 km/h). Using Riegel's formula, the same fitness suggests about 28:04 for 5K and about 2:09 for a half marathon — if you build up your long runs. Heart-rate training helps you run easy days at the right effort: see theheart rate zone calculator, and fuel up with thecalorie calculator.

Health disclaimer: This tool gives general estimates for information only and is not medical advice, diagnosis or treatment. Please consult a qualified doctor about your health. Read the full disclaimer.

Frequently asked questions

How do I calculate running pace?

Pace = time ÷ distance. A 10 km run in 55 minutes is a pace of 5:30 per km. Speed is the reverse: 10 km ÷ 0.917 hours ≈ 10.9 km/h.

What is a good 5K or 10K time?

For recreational runners, finishing a 5K in 30–35 minutes or a 10K in 60–70 minutes is a common, solid goal. Beginners often run-walk; improving your own time matters far more than comparing with others.

How accurate are race-time predictions?

Predictions use Riegel’s formula (T2 = T1 × (D2 ÷ D1)^1.06), which works well between similar distances when you have trained for the longer one. Half-marathon and marathon predictions from a 5K are optimistic unless your weekly mileage is high.

What pace should my easy runs be?

Easy runs should feel conversational — often 60–90 seconds per km slower than your 10K race pace. Most of your weekly running should be at this effort.

Race predictions