Staying well hydrated is crucial to marathon success. The general rule of thumb is to drink about a half-cup to one cup of water or sports drink every 15 to 20 minutes, depending on how much you sweat.Most marathons offer water about every two miles. But if you’re running fairly slowly (say, 10-minute pace or slower) or like to be able to drink water whenever you’re thirsty, you might consider carrying a water bottle or other water storage device. There are a wide variety to choose from.


Some water bottles come with straps so you can carry them in your hand without really actively holding onto them. Others come in fanny-pack-type devices (fuel belts) that hold one or two larger bottles at the small of your back (about 22 ounces) or numerous smaller ones. Backpack-type devices hold anywhere from about 20 to 75 ounces or more, whichyou access by sipping through a tube.

If you buy one of these, make sure you test them out before race day. Some people find it annoying to be carrying things in their hand. Others find the belted water bottle devices uncomfortable, too tight or too loose and constantly slipping. And not everyone likes to sip water through a straw.

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