3:45 Marathon Pace
To finish a 3:45 marathon in 3:45:00, you need to average 5:19 per kilometer — that's 8:34 per mile, or 11.3 km/h (7.0 mph) held for the full 42.195 km.
This is a strong, well-trained amateur time — comfortably faster than the average marathon finisher.
Split times for a 3:45 marathon
Where you need to be at each checkpoint, assuming perfectly even pacing — the strategy that works best for most runners at this distance.
| Checkpoint | Elapsed time |
|---|---|
| 5 km | 26:40 |
| 10 km | 53:19 |
| 15 km | 1:19:59 |
| 20 km | 1:46:39 |
| Halfway | 1:52:30 |
| 25 km | 2:13:19 |
| 30 km | 2:39:58 |
| 35 km | 3:06:38 |
| 40 km | 3:33:18 |
| Finish | 3:45:00 |
Want kilometer-by-kilometer splits, negative splits, or mile splits? Build a custom plan with the Split Time Generator.
Is 3:45:00 realistic for you?
Race times scale predictably across distances (we use the Riegel formula). If your recent results are close to these equivalents, a 3:45 marathon is within reach:
| Distance | Equivalent time | Pace |
|---|---|---|
| Half Marathon | 1:47:55 | 5:06 /km |
| 10K | 48:55 | 4:53 /km |
| 5K | 23:28 | 4:41 /km |
These assume similar training for each distance — check your own numbers with the Pace Calculator.
Training paces for this goal
Rules of thumb derived from your goal — most of your training should be much slower than race pace:
Make it stick on race day
🖨 Print the free pace band for this exact goal →
Practice your rhythm with the Cadence Trainer, and read our guide on pacing strategies from 5K to marathon.