3:20 marathon pace is 7:38 per mile.
3:20 is the Boston qualifying standard for men 50 to 54. Getting into the 2027 race outright took 3:14:43, a little more than five minutes faster.
Splits at even pace
| Checkpoint | Clock time |
|---|---|
| 5K | 23:42 |
| 10K | 47:24 |
| 15K | 1:11:06 |
| 20K | 1:34:48 |
| Half marathon | 1:40:00 |
| 25K | 1:58:30 |
| 30K | 2:22:12 |
| 20 miles | 2:32:34 |
| 35K | 2:45:54 |
| 40K | 3:09:36 |
| Finish | 3:20:00 |
Splits assume even pace. GPS tends to read long on race courses, so check the clock at the mile markers.
How to run it
Miles 1 to 3. Run 7:40 to 7:45, which costs only 5 to 20 seconds.
Miles 4 to 20. Settle at 7:36 and pass halfway near 1:40:00. The taper can be worth as much as the pacing: in training data from more than 158,000 recreational marathoners, a strict three-week taper was worth a median 5 minutes 32 seconds over a minimal one (Frontiers), close to the gap between this standard and the 2027 cutoff.
The last 10K. Pass mile 20 at about 2:32:35 with 47:26 left, 7:38 a mile to the finish.
Equivalent race times
If you’ve run close to these times recently, 3:20 is a realistic goal. If your races are slower, check what they predict below.
| Distance | Riegel formula | Daniels VDOT |
|---|---|---|
| 5K | 20:51 | 20:56 |
| 10K | 43:29 | 43:23 |
| Half marathon | 1:35:56 | 1:36:08 |
Predictions use Riegel’s formula and Jack Daniels’ VDOT, and both assume training suited to the longer distance.
Fueling at this pace
Over 3:20, 60 g of carbohydrate an hour after the first half hour comes to about seven 25 g gels. Practice the full plan on two or three long runs, since sports scientist Asker Jeukendrup notes the gut adapts with training.
