Hi. Let me introduce myself. I’m a 38-year-old, distinctly part-time runner, but with a decent base of strength and stamina. I’ve tried, but never managed to run 5K in under 20 minutes. There is, of ...

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, ...