First-time marathoner: Follow the pattern you've used in training, walking 1 minute for every 3 to 5 minutes of running.

Experienced marathoner: Use the guidelines in the chart below, according to your time goal.

Because you'll still be moving forward, a 1-minute walk break will only slow your overall pace-per-mile by 15 to 20 seconds, depending on how fast you walk.…

Marathon walk breaks vary, depending on your time goal. Here's a guide:

Time Goal Strategy
5:30 or slower 1-2 min. of walking after every 3-4 min. of running
5:00 to 5:29 1 min. of walking after every 4 to 5 min. of running
4:30 to 4:59 1 min. of walking after 6-7 min. of running
4:00 to 4:29 1 min. of walking after 7-8 min. of running
3:30 to 3:59 1 min. of walking after every mile
3:16 to 3:29 30 sec. of walking after ever mile
3:08 to 3:15 15 sec. of walking after every mile
2:50 to 3:07 10 sec. of walking after every mile