600m to 1500m Conversion Calculator
600m and 1500m share the middle-distance demand for both speed and endurance. This tool converts your 600m fitness to a 1500m estimate by modeling how mixed anaerobic-aerobic performance scales across these closely related events.
Quick answer: a 1:35.00 600m converts to about 4:52 for the 1500m (typical range 4:39 to 5:10).
600m to 1500m conversion table
Estimates only – individual results vary with training, conditions and event experience.
| 600m time | Predicted 1500m | Range |
|---|---|---|
| 1:20.00 | 4:06 | 3:55–4:21 |
| 1:22.50 | 4:14 | 4:02–4:30 |
| 1:25.00 | 4:21 | 4:10–4:38 |
| 1:27.50 | 4:29 | 4:17–4:46 |
| 1:30.00 | 4:37 | 4:24–4:54 |
| 1:32.50 | 4:44 | 4:32–5:02 |
| 1:35.00 | 4:52 | 4:39–5:10 |
| 1:37.50 | 5:00 | 4:46–5:19 |
| 1:40.00 | 5:07 | 4:54–5:27 |
| 1:42.50 | 5:15 | 5:01–5:35 |
| 1:45.00 | 5:23 | 5:08–5:43 |
| 1:47.50 | 5:30 | 5:16–5:51 |
| 1:50.00 | 5:38 | 5:23–5:59 |
| 1:52.50 | 5:46 | 5:30–6:08 |
| 1:55.00 | 5:53 | 5:38–6:16 |
| 1:57.50 | 6:01 | 5:45–6:24 |
| 2:00 | 6:09 | 5:52–6:32 |
| 2:03 | 6:16 | 6:00–6:40 |
| 2:05 | 6:24 | 6:07–6:48 |
| 2:08 | 6:32 | 6:14–6:57 |
| 2:10 | 6:40 | 6:22–7:05 |
How it works
The 600m to 1500m conversion uses Riegel's power-law formula with event-specific exponents, cross-validated by VDOT oxygen-cost modeling. The 2.5x distance gap requires careful modeling of the shift from mixed anaerobic-aerobic to aerobic-dominant. The result includes a confidence range reflecting extrapolation uncertainty.
Training advice
For the most accurate prediction, enter a recent all-out 600m effort. If preparing specifically for 1500m, incorporate VO2max intervals and kick into your weekly routine. The prediction reflects current fitness — structured training targeting aerobic-dominant capacity can help you beat it.
Frequently asked questions
How accurate is a 600m to 1500m prediction?
With a recent all-out 600m, predictions are typically within 2-5% of actual 1500m performance. The close distance relationship provides strong reliability.
What training improves my 1500m from a 600m base?
Focus on VO2max intervals and kick. Your 600m provides a directly transferable fitness base. Progressive, specific training over 8-16 weeks can push you past the predicted time.
Should I enter more than one race time?
This page uses your 600m as the primary input. For a more comprehensive multi-distance analysis, use the full calculator on the homepage — entering 2-3 times produces more precise predictions.