time goal. Most marathon-training schedules require running five or six days per week, with total mileage of 40 to 60 miles. Two of the most successful training wizards think that's too much for many runners. The marathon-training programme developed

, tempo runs and speedwork – and spend two or three of the remaining days doing cross-training or strength-training workouts.Should you try it? Definitely, if you like to ride. Two studies have directly compared run-only and run/bike training. In both

The Fear: Getting InjuredThe Fix: Train Smarter What is a runner's number one fear? No, it's not being pursued by the giant octopus on the previous pages, but injury, according to two-thirds of RW poll respondents. Start winning your battle