Swim Pace Calculator
1 km in 13 minutes is a pace of 1:18 per 100 m
Swimming 1 km in 13 minutes requires a pace of 1:18 per 100 m (13:00 per km / 20:55 per mile). This distance is a 1 km open-water benchmark.
At 1:18/100 m, each 25 m lap takes 0:20 and each 50 m length takes 0:39. To check a different time for 1 km, or to explore pool and open-water splits, use the calculator below.
Pace breakdown
| Distance | 1 km |
| Target time | 13 minutes |
| Pace per 100 m | 1:18 |
| Pace per km | 13:00 |
| Pace per mile | 20:55 |
Training paces at 1:18/100 m
Derived from your 1:18/100 m race pace using the same formula as the Swim Pace Calculator.
| Easy (warm-up / recovery) | 1:30/100 m |
| Aerobic base | 1:22/100 m |
| Threshold | 1:14/100 m |
| Build sets | 1:10/100 m |
| Sprint intervals | 1:06/100 m |
| Lap pace (25 m pool) | 0:20/lap |
Try a different time for 1 km
Want to calculate a different pairing? Open the Swim Pace Calculator to enter any distance and time, see pool and open-water splits, and build your training zones.