How pace is calculated
Pace = Time ÷ Distance Speed = Distance ÷ Time
A 5K (3.11 miles) in 28:30 is a pace of about 9:10 per mile, or 5:42 per kilometer.
Predicting other race times
Peter Riegel's formula estimates a time at a new distance from a recent race: T₂ = T₁ × (D₂ ÷ D₁)1.06. It works best between similar distances and when you've trained for the longer race.
Standard race distances
| Race | Miles | Kilometers |
|---|---|---|
| 5K | 3.11 mi | 5 km |
| 10K | 6.21 mi | 10 km |
| Half marathon | 13.1 mi | 21.0975 km |
| Marathon | 26.2 mi | 42.195 km |
Frequently asked questions
What is a good pace for a beginner?
Any pace you can hold while still talking in short sentences is a good place to start. Many new runners average 10 to 13 minutes per mile.
How do I convert pace per mile to per km?
Divide the per-mile pace by 1.609. A 9:00 per mile pace is about 5:35 per kilometer.