How to Use This 5K Pace Calculator
Enter your goal 5K finish time. The calculator shows your required average pace per kilometre or mile, plus 1 km, 2 km, and 3 km even-split checkpoints — useful to track in race conditions.
The training zones use your 5K race pace (RP) as the anchor: easy runs at RP +30%, threshold sessions at RP +15%, and interval sessions at or near 5K pace.
What Is 5K Pace?
5K pace is one of the most intense sustained efforts in running — near VO₂max, the maximum rate at which your body can use oxygen. Most runners find 5K pace genuinely hard for the full distance. If it doesn't feel hard by km 4, you started too slowly.
For reference: a 25-minute 5K requires 5:00/km (8:03/mi). A 20-minute 5K requires 4:00/km (6:26/mi). A sub-18-minute 5K requires holding 3:36/km (5:48/mi).
5K Pace Chart — Common Goal Times
Reference paces for common 5K targets. All paces are for even splits across 5 km.
| Goal Time | Per km | Per mile | 1K split |
|---|---|---|---|
| 16:00 | 3:12 min/km | 5:09 min/mi | 3:12 |
| 18:00 | 3:36 min/km | 5:48 min/mi | 3:36 |
| 20:00 | 4:00 min/km | 6:26 min/mi | 4:00 |
| 22:00 | 4:24 min/km | 7:05 min/mi | 4:24 |
| 25:00 | 5:00 min/km | 8:03 min/mi | 5:00 |
| 28:00 | 5:36 min/km | 9:01 min/mi | 5:36 |
| 30:00 | 6:00 min/km | 9:39 min/mi | 6:00 |
| 35:00 | 7:00 min/km | 11:16 min/mi | 7:00 |
5K Pacing Strategy
5K races are often won or lost in the first kilometre. Race-day adrenaline and crowd energy make it easy to go out 15–20 seconds per km too fast — which feels fine at km 1 and catastrophic at km 4.
- Km 1: 5 seconds per km slower than goal pace. This will feel too easy. It's correct.
- Km 2–3: Settle into goal pace. By km 2 the race should feel hard but controlled.
- Km 4–5: Race. If you've paced correctly, you'll have something left. Pass people in the final kilometre, not the first.
Training Paces for 5K Improvement
- Easy / Recovery (6:30/km): 30% slower than 5K pace. Fully conversational. 70–75% of all mileage — the base everything else is built on.
- Threshold (5:45/km): 15% slower than 5K pace — comfortably hard, sustainable for 20–30 minutes. Weekly threshold runs are the biggest single driver of 5K improvement.
- Intervals (4:45/km): At 5K race pace. Short, quality reps — e.g. 6 × 400m, 5 × 800m, or 4 × 1 km — with full recovery between reps.
Related Running Tools
- Race Time Predictor — Predict your 10K or half marathon from your 5K time
- Heart Rate Zone Calculator — Personalised HR zones for easy and threshold training
- Marathon Pace Calculator — Plan your 10K, half, or full marathon splits
- VO₂ Max Calculator — Estimate your aerobic ceiling and get VDOT paces