Lets say that a guy, in his mid 20's, 6ft. 190 or so, who is NOT a runner, had to run 1.5 miles within 15 min 20sec. Lets say he had to do it 6 days from today. This guy did it once, a couple years ago, in about 14:30, when he weighed about 15 pounds less. It was really difficult the last 3/4 mi, but he did it. Didn't do much training prior to that. So it's very likely that he can complete this challenge, but he wants to prepare himself as much as possible. On such short notice. I know it's a rediculous set of parameters, but he really could use the advice. He needs advice on training as much as possible without risking injury, or fatigue (by over-training)that could hamper the ability to complete the challenge. Dieting tips also welcomed. Hypothetically, of course.