3:30 Marathon Pace
The exact even pace, per-kilometer splits and checkpoint times you need to run a 3:30 marathon — plus fueling and equivalent race times. Free.
| Distance | Time at even pace |
|---|---|
| 5K | 24:53 |
| 10K | 49:46 |
| 15K | 1:14:39 |
| Half | 1:45:00 |
| 25K | 2:04:25 |
| 30K | 2:29:18 |
| 35K | 2:54:11 |
| 40K | 3:19:05 |
| Finish | 3:30:00 |
⚡ Fueling for a 3:30 marathon
At roughly 3.5 hours of running, aim for about 60–90 g of carbohydrate per hour (≈ 210–315 g total) and 300–800 mg sodium per hour. Test your exact fueling in training — never race on something new.
Build your race-day fuel →Full kilometer-by-kilometer split table ▾
| KM | Cumulative | Pace/km |
|---|---|---|
| 1 km | 4:59 | 4:59 |
| 2 km | 9:57 | 4:59 |
| 3 km | 14:56 | 4:59 |
| 4 km | 19:54 | 4:59 |
| 5 km | 24:53 | 4:59 |
| 6 km | 29:52 | 4:59 |
| 7 km | 34:50 | 4:59 |
| 8 km | 39:49 | 4:59 |
| 9 km | 44:48 | 4:59 |
| 10 km | 49:46 | 4:59 |
| 11 km | 54:45 | 4:59 |
| 12 km | 59:43 | 4:59 |
| 13 km | 1:04:42 | 4:59 |
| 14 km | 1:09:41 | 4:59 |
| 15 km | 1:14:39 | 4:59 |
| 16 km | 1:19:38 | 4:59 |
| 17 km | 1:24:36 | 4:59 |
| 18 km | 1:29:35 | 4:59 |
| 19 km | 1:34:34 | 4:59 |
| 20 km | 1:39:32 | 4:59 |
| 21 km | 1:44:31 | 4:59 |
| 22 km | 1:49:29 | 4:59 |
| 23 km | 1:54:28 | 4:59 |
| 24 km | 1:59:27 | 4:59 |
| 25 km | 2:04:25 | 4:59 |
| 26 km | 2:09:24 | 4:59 |
| 27 km | 2:14:23 | 4:59 |
| 28 km | 2:19:21 | 4:59 |
| 29 km | 2:24:20 | 4:59 |
| 30 km | 2:29:18 | 4:59 |
| 31 km | 2:34:17 | 4:59 |
| 32 km | 2:39:16 | 4:59 |
| 33 km | 2:44:14 | 4:59 |
| 34 km | 2:49:13 | 4:59 |
| 35 km | 2:54:11 | 4:59 |
| 36 km | 2:59:10 | 4:59 |
| 37 km | 3:04:09 | 4:59 |
| 38 km | 3:09:07 | 4:59 |
| 39 km | 3:14:06 | 4:59 |
| 40 km | 3:19:05 | 4:59 |
| 41 km | 3:24:03 | 4:59 |
| 42 km | 3:29:02 | 4:59 |
| 42.195 km | 3:30:00 | 4:59 |
How to actually run a 3:30 marathon
The pace above assumes an even effort. In a study of over 4 million race records, 28% of men and 17% of women slowed dramatically in the second half — "hitting the wall" — almost always because they banked time early. Aim to reach halfway (1:45:00) on schedule or a few seconds behind, then hold. A flat, even or slight negative split is how most runners hit 3:30.
What pace is a 3:30 marathon?
A 3:30 marathon requires an even pace of 4:59 per kilometer (8:01 per mile), about 12.1 km/h. Over 42.195 km that adds up to exactly 3:30.
What are the 5K, 10K and halfway splits for a 3:30 marathon?
At even pace you pass 5K in 24:53, 10K in 49:46, and the halfway point (21.1 km) in 1:45:00. Reaching halfway meaningfully faster than 1:45:00 is the classic positive-split mistake that causes late-race slowdown.
How many carbohydrates do I need for a 3:30 marathon?
For a run of about 3.5 hours, sports-nutrition consensus is roughly 60–90 g of carbohydrate per hour — around 210–315 g total — plus 300–800 mg of sodium per hour depending on sweat rate. Practice your exact fueling in training; never try anything new on race day.
Times are mathematical even-pace targets, not a guarantee. Real results vary with course, weather, fitness and fueling. Nutrition guidance is general — consult a professional for individual needs.