Trail Vert Half-Marathon Level 4 (Advance) - 0-600 ft. of Vert This Half-Marathon training plan (up to 16 weeks long) has all the best workouts I've used over the years to help runners get ready to run your best for 13.1 miles. You'll perform several types of workouts from stamina workouts to speed workouts to goal pace workouts to long runs. And, I'll build your fitness is a gradual yet progressive way so you stay injury free. The end result is that you'll feel smooth and strong and you'll ...