Before the 20-mile long runs, tempo miles, or sprint interval workouts of marathon prep, there’s base training—a quiet development period used to stack easy miles, reinforce strength training habits, ...

Safely double your weekly training load to prepare for a half or marathon training plan.

Base training is an essential piece of marathon preparation. It’s when runners establish a consistent routine and build the aerobic fitness foundation that they’ll rely on later. Because the miles are ...