Pace Calculator
Enter any two of pace, time and distance to compute the third. Includes finish-time predictions for popular race distances from the 5K to the marathon.
Pace
5:00 min/km (8.05 min/mile)
Finish time
50:00
Speed
12 km/h
Race predictions
How to Use the Pace Calculator
- Choose which value you want to find: pace, time or distance.
- Fill in the other two fields in any unit combination.
- Read your result along with predicted finish times for standard race distances.
Formulas Used
Pace = time / distance (min per km or min per mile)
Time = pace × distance
Distance = time / pace
Riegel race prediction: T₂ = T₁ × (D₂ / D₁)^1.06
Frequently Asked Questions
What is a good running pace?
It depends on experience and distance. Recreational runners commonly average 6:00-7:30 min/km (9:40-12:00 min/mile); beginners often start slower and that is completely fine.
How does the Riegel formula predict race times?
It scales a known performance by distance raised to the power 1.06, capturing the fact that fatigue grows faster than distance. It works well between neighbouring distances.
Should I run even splits?
Even or slightly negative splits are usually fastest for beginners. Starting faster than target pace burns glycogen early and typically slows the final third of a race.
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