5k Running 5k Intermediate Follow this plan to improve your 5k time 4 days - 5 workouts/week (15 - 25 mi) $$20.95 9 /weeks Pace Running 5k Intermediate 4 days - 5 workouts/week (15 - 25 mi) Pace 9 /weeks $20.95 Half Marathon Running Half Marathon Intermediate Half Marathon 4-5 days/week- High Miles 5 days/week $$45.00 15 /weeks Pace Running Half Marathon Intermediate 5 days/week Pace 15 /weeks $45.00