Runnersworld.com
For most runners, Runner’s World—in print and online—is indispensable. Browse its reliable shoe guide, search for training tips and schedules and be inspired by other runners.

Bostonmarathon.org
Before you become part of this marathon’s legendary history, read about its storied past, study the course and browse for race merchandise.

Halhigdon.com
A long-time contributor to Runner’s World and author of 34 books, Hal Higdon has helped countless runners meet their marathon goals.

Coolrunning.com
Looking for an upcoming race to test your marathon pace? Search the events listing to find a race that’s right for you.

Nerunner.com
A handy resource for local runners.

Books

Marathon: You Can Do It!
By Jeff Galloway

Nancy Clark's Sports Nutrition Guidebook
By Nancy Clark

Running Within: A Guide to Mastering the Body-Mind-Spirit Connection for Ultimate Training and Racing
By Jerry Lynch and Warren A. Scott