Free Pace Calculator — Running Splits & Race Predictions
Enter your distance and time to get pace per km, pace per mile, and predicted finish times for 5K, 10K, half marathon and marathon — instantly, no signup.
Inputs
The distance you ran.
Total time in minutes. Use decimals for seconds (55.5 = 55m 30s).
Why people use this calculator
- Pace per km and per mile in one view
- Race predictions for 5K, 10K, half marathon and marathon
- Works for miles or kilometres
- Free, private and fast on any device
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OpenFrequently asked questions
›How do I calculate running pace?
Divide total time by distance. The calculator does this automatically and shows both min/km and min/mile.
›What is a good 5K pace?
Beginners often run 6:00–7:30 /km (9:40–12:00 /mile). Experienced runners may be under 5:00 /km.
›How accurate are the marathon predictions?
The Riegel formula is usually within 2–3% for well-trained runners. Under-trained marathoners often finish slower than predicted.
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