The best strength training exercises for runners should be geared towards their weaker muscles. In my experience, hamstrings, glutes and hips are naturally weak for many runners.
I really like the exercises in this workout. I also appreciate that the trainer provides some easier options for some of the exercises (in particular the hanging leg raise) because they can be tough.
It’s noteworthy to point out some of the tips the trainer provides as well. Ensuring your back is straight, squeezing your glutes and letting you know which muscles are worked in each exercise is important.
If you’re just starting out, you can cut the number of recommended reps in half. Ensure you properly breath during the reps will help you complete more (sounds obvious, but you would be surprise how many people hold their breath for 3-4 reps).
I recommend including this workout on the same day as your harder workouts (like long runs, tempos, fartleks, hills or intervals). Twice per week should work. We want to keep hard days hard and easy days easy so we can get the most out of each.