Jump to: How Missing a Workout Can Affect Your Run Performance What to Do When You Miss… One or Two Workouts One Week Two Weeks Three Weeks or More If you’ve missed a workout or two on your training plan , you’re certainly not alone. In fact, it’s pretty common: A study published in the journal Frontiers in Sport and Active Living found that more than 50 percent of marathon runners experienced training disruptions that lasted at least seven days, after analyzing the training data of nearly 300,000 Strava users who completed marathons from 2014 to 2017. It’s understandable, because sometimes life just gets in the way and derails your good intentions of getting out and checking off miles. Luckily, one missed workout isn’t going to ruin your performance or race-day plans —even missing a few workouts won’t derail your goals. To help you better understand how missing one workout (or more!) can affect your run goals, we tapped a few running experts.…