Running Calculator
Enter a recent race result:
Training Paces
| Pace/km | Pace/400m | Pace/mile | Speed m/s | |
|---|---|---|---|---|
| Critical Speed | -- - | -- - | -- - | -- - |
| Zone | Pace/km | Pace/400m | Pace/mile | Speed m/s |
|---|---|---|---|---|
| 1 Recovery | -- - | -- - | -- - | -- - |
| 2 Endurance | -- - | -- - | -- - | -- - |
| 3 Tempo | -- - | -- - | -- - | -- - |
| 4 Threshold | -- - | -- - | -- - | -- - |
| 5 VO2Max | -- - | -- - | -- - | -- - |
| 6 Anaerobic Capacity | -- - | -- - | -- - | -- - |
Race Predictor
| Distance | Time | Pace/km | Pace/400m | Pace/mile | Speed m/s |
|---|---|---|---|---|---|
| 800m | -- | -- | -- | -- | -- |
| 1000m | -- | -- | -- | -- | -- |
| 1500m | -- | -- | -- | -- | -- |
| 1 Mile | -- | -- | -- | -- | -- |
| 3km | -- | -- | -- | -- | -- |
| 5km | -- | -- | -- | -- | -- |
| 10km | -- | -- | -- | -- | -- |
| Half Marathon | -- | -- | -- | -- | -- |
| 30km | -- | -- | -- | -- | -- |
| Marathon | -- | -- | -- | -- | -- |
|
Custom Distance km |
-- | -- | -- | -- | -- |
An explanation of how these paces and race times are calculated,
as well as the source code can
be found here.
Enter a target split.
Track Splits
| 400m Split | Pace/km | Pace/mile | Speed m/s | |
|---|---|---|---|---|
| -- | -- | -- | -- | -- |
| -- | -- | -- | -- | -- |
| -- | -- | -- | -- | -- |
| -- | -- | -- | -- | -- |
| -- | -- | -- | -- | -- |
| -- | -- | -- | -- | -- |
| -- | -- | -- | -- | -- |
| -- | -- | -- | -- | -- |
| -- | -- | -- | -- | -- |
| -- | -- | -- | -- | -- |
| -- | -- | -- | -- | -- |
| -- | -- | -- | -- | -- |
| -- | -- | -- | -- | -- |
These calculations are based on a IAAF 400m Standard Track with a
constant lane width of 1.22m. This equates to an additional 7.67m
length per lane. An explanation of the calculations, as well as
the source code can
be found here.
More information on Critical Speed and D' can be read here.
Critical Speed
| Pace/km | Pace/400m | Pace/mile | Speed m/s | Speed km/h | |
|---|---|---|---|---|---|
| Critical Speed | -- | -- | -- | -- | -- |
D'
| metres |
|---|
| --m |
Speed-Duration Curve