To some people, jogging 26.2 miles for fun seems like a batty idea. But it's as popular as ever: Last year, close to 500,000 Americans finished marathons. Fall features some of the country's most high-profile events, from the Chicago and Washington, D.C. Marine Corps marathons in October to -- the big kahuna -- the New York City marathon in November. Last year, Superstorm Sandy forced N.Y.C.'s organizers to cancel the five-borough run -- which means this year's runners are even more fired up to hit the road. Racing this season? For an extra dose of motivation to power your training, check out these great books. Trust us: Whether you're a seasoned racer or a newbie looking to tick running 26.2 off your bucket list, there's something here to help you.