14 Products Every Marathoner Should Own, According to Pro Runner Emily Sisson

UCAN Edge Energy Gel ($36 for 12)

While gels are the on-the-run fuel of choice for most everyday runners, elite marathoners like Sisson usually take their fuel in bottles. But even Sisson takes a gel sometimes, especially for medium-length runs (which, believe it or not, are around 14 miles), where she just needs a little something midway through, or when she hasn't eaten enough pre-run and needs an option that won't sit in her stomach as she's heading out the door. She likes the UCAN gels because unlike many other brands, it's not necessary to wash them down with water.