Running is an inexpensive, practical, and convenient sport, but some take it to the limit. From cold-weather running in Alaska to the intense heat of the Sahara Marathon, athletes attempt to overcome the elements. Extremes of environment, route, and geography are another challenge: trails through dense jungle and over soaring mountain ranges. The rewards are experiences of a lifetime, the sense of having been to largely unexplored places, and realizing unique ambitions. Never before has there been a manual to pull together all the elements of this new but fast-growing sport, touching on every aspect from lone desert running to ultramarathons. The follow-up to Extreme Golf and Extreme Sailing, this third volume is a must-have for all runners.