SUPERANNO Millions of runners use Speed & Distance devices, and serious participants know that the technology can provide an edge over the competition. <IT>The Runner's Edge<RO> unlocks the mystery and potential of these devices. Speed & Distance device pioneer, Stephen McGregor, teams up with Runner's World/Triathlete writer Matt Fitzgerald to instruct athletes to use digital running technology to reach new levels and personal best times. Includes sample training plans for 5K, 10K, half-marathon and marathon runners. Original.