Jennifer Van Allen is a USATF and RRCA-certified running coach and a former editor for Runner's World. She is the author of The Runner's World Big Book of Running for Beginners and the Runner's World Big Book of Marathon and Half-Marathon Training. She has completed 49 marathons and ultras, and written for magazines and newspapers since 1996. She is based in Portland, Maine.

Pamela Nisevich Bede, RD, CSSD, is a sports nutrition expert and co-owner of Swim, Bike, Run, Eat!, LLV, a nutrition consulting firm.