When Needham adventure racer Tim Reif begins the 500-mile Primal Quest race in southern Utah next month, he and his teammates will carry a device that could save their lives: a portable GPS receiver.He runs with a Garmin GPS watch, and hikes and bikes with a Magellan unit. He rarely leaves home without them. As they hike, bike, and paddle across some of North America’s most treacherous terrain, Reif’s team will lug a specially designed GPS unit that will allow race officials to electronically monitor every step of their progress during a non stop odyssey that could take up to 10 days to complete.
See complete Boston GLobe Article by By James Whitters, Globe Correspondent