Endurometry
To finish a Marathon (42.195 km) in 3 hours 20 minutes, you need to hold 4:44 /km (7:38 /mi) — an average speed of 12.66 km/h. The tables below list the time you should pass every kilometre and mile.
Need a printout? Use the pace band generator.
Marathon Split Times (3 hours 20 minutes)
| Kilometre | Cumulative time | Split pace |
|---|---|---|
| 1 km | 4:44 | 4:44 |
| 2 km | 9:29 | 4:44 |
| 3 km | 14:13 | 4:44 |
| 4 km | 18:58 | 4:44 |
| 5 km | 23:42 | 4:44 |
| 6 km | 28:26 | 4:44 |
| 7 km | 33:11 | 4:44 |
| 8 km | 37:55 | 4:44 |
| 9 km | 42:40 | 4:44 |
| 10 km | 47:24 | 4:44 |
| 11 km | 52:08 | 4:44 |
| 12 km | 56:53 | 4:44 |
| 13 km | 1:01:37 | 4:44 |
| 14 km | 1:06:22 | 4:44 |
| 15 km | 1:11:06 | 4:44 |
| 16 km | 1:15:50 | 4:44 |
| 17 km | 1:20:35 | 4:44 |
| 18 km | 1:25:19 | 4:44 |
| 19 km | 1:30:03 | 4:44 |
| 20 km | 1:34:48 | 4:44 |
| 21 km | 1:39:32 | 4:44 |
| 22 km | 1:44:17 | 4:44 |
| 23 km | 1:49:01 | 4:44 |
| 24 km | 1:53:45 | 4:44 |
| 25 km | 1:58:30 | 4:44 |
| 26 km | 2:03:14 | 4:44 |
| 27 km | 2:07:59 | 4:44 |
| 28 km | 2:12:43 | 4:44 |
| 29 km | 2:17:27 | 4:44 |
| 30 km | 2:22:12 | 4:44 |
| 31 km | 2:26:56 | 4:44 |
| 32 km | 2:31:41 | 4:44 |
| 33 km | 2:36:25 | 4:44 |
| 34 km | 2:41:09 | 4:44 |
| 35 km | 2:45:54 | 4:44 |
| 36 km | 2:50:38 | 4:44 |
| 37 km | 2:55:23 | 4:44 |
| 38 km | 3:00:07 | 4:44 |
| 39 km | 3:04:51 | 4:44 |
| 40 km | 3:09:36 | 4:44 |
| 41 km | 3:14:20 | 4:44 |
| 42 km | 3:19:05 | 4:44 |
| 42.195 km (finish) | 3:20:00 | 4:44 |
Mile Splits
| Mile | Cumulative time | Split pace |
|---|---|---|
| Mile 1 | 7:38 | 7:38 |
| Mile 2 | 15:15 | 7:38 |
| Mile 3 | 22:53 | 7:38 |
| Mile 4 | 30:31 | 7:38 |
| Mile 5 | 38:08 | 7:38 |
| Mile 6 | 45:46 | 7:38 |
| Mile 7 | 53:24 | 7:38 |
| Mile 8 | 1:01:02 | 7:38 |
| Mile 9 | 1:08:39 | 7:38 |
| Mile 10 | 1:16:17 | 7:38 |
| Mile 11 | 1:23:55 | 7:38 |
| Mile 12 | 1:31:32 | 7:38 |
| Mile 13 | 1:39:10 | 7:38 |
| Mile 14 | 1:46:48 | 7:38 |
| Mile 15 | 1:54:25 | 7:38 |
| Mile 16 | 2:02:03 | 7:38 |
| Mile 17 | 2:09:41 | 7:38 |
| Mile 18 | 2:17:18 | 7:38 |
| Mile 19 | 2:24:56 | 7:38 |
| Mile 20 | 2:32:34 | 7:38 |
| Mile 21 | 2:40:11 | 7:38 |
| Mile 22 | 2:47:49 | 7:38 |
| Mile 23 | 2:55:27 | 7:38 |
| Mile 24 | 3:03:05 | 7:38 |
| Mile 25 | 3:10:42 | 7:38 |
| Mile 26 | 3:18:20 | 7:38 |
| 26.219 mi (finish) | 3:20:00 | 7:38 |
More pace charts
Frequently Asked Questions
How fast do I need to run a Marathon in 3 hours 20 minutes?
Average pace 4:44 /km (7:38 /mi), 12.66 km/h.
Should I run even splits?
Even effort is the most economical, but the first 10–15% is usually crowded. Start 5–10 s/km slower and settle into target pace.
My GPS shows extra distance
Courses usually measure a few hundred metres long on GPS. Run slightly faster than target by feel, or lap manually at the markers.
Related Tools
Running Pace Calculator
Enter distance and finish time to get your pace per km and mile, average speed and per-kilometre splits.
Running Pace Converter
Convert between min/km, min/mi, km/h and mph, and see the implied finish time for 5K, 10K, half marathon and marathon.
KPH to MPH Converter (km/h to mph)
Convert kph to mph instantly: mph = km/h × 0.621371, so 100 km/h = 62.14 mph. Free km/h to miles per hour chart for road and running speeds, plus mph to km/h.
Race Time Predictor
Predict your finish time at any distance using the Riegel power law and the Daniels–Gilbert VO2max model.
Training Pace Calculator (VDOT Zones)
Get your VDOT from a recent race and see easy, marathon, threshold, interval and repetition pace zones plus heart-rate zones.
Age Grading Calculator
Convert a finish time to an approximate open-class (20–29) equivalent using Endurometry age factors — not official WMA tables.
Want a new tool or fix?
Tell us which calculator, pace chart or fix would help — we build what runners ask for. Replies usually come back in 1–2 days.