Does a 3-day-a-week marathon training plan actually work? Yes! It turns out focusing on three key runs: a long run, a tempo ...

While Vertue offers guidance for how to spend your off-plan days, the fact it's just three days a week means you have loads of time to work on individual fitness goals. "It also allows for you to add ...

Depending on your goals and experience level, it's the type of routine that you can use once in a week for a three-day split or even double-up for a six-day split, hitting each workout twice.