Training for a half marathon is one of those goals that sounds manageable until you actually sit down and try to structure it. I knew I wanted to run the Charleston Half Marathon, but I had no idea how to build a plan that would get me to the start line healthy and ready to race.
The first thing I learned is that most people start with the race and work backward — but that approach skips the most important question: where are you right now? Before I wrote a single training week, I spent three weeks just running consistently at an easy pace to establish my actual baseline. Not where I thought I was, but where I actually was.
Building a Base Before Building a Plan
The temptation when you sign up for a race is to immediately start doing hard workouts. Speed intervals. Tempo runs. Long runs at race pace. I resisted all of it for the first month. Instead, I focused on running four days a week at a pace where I could hold a full conversation — what coaches call Zone 2 effort.
This felt almost embarrassingly slow. But it built the aerobic foundation that everything else depends on. By the time I started adding structure, my easy pace had improved without any effort, and I was recovering faster between runs.
The Structure I Settled On
My weekly structure became: two shorter runs at easy effort, one midweek run with some quality work (usually a tempo segment or a set of hill repeats), and one long run on the weekend. Four days of running, three days of rest or cross-training.
The long run is the anchor of half marathon training. I increased it by no more than a mile each week, and every third week I’d pull back to give my legs a chance to absorb the training load. This pattern — build, build, recover — is the actual mechanism behind progress in endurance running.
What I Got Wrong at First
I ran my easy runs too fast. Nearly every recreational runner does. I’d go out for what was supposed to be a recovery run and push harder than I intended because the pace felt comfortable in the first mile. By mile three, I was running at a moderate effort instead of an easy one, accumulating fatigue that affected my quality sessions.
The fix was simple but required discipline: I started using heart rate as a guide rather than pace. Easy meant easy — a heart rate low enough that I could talk freely, not just answer yes-or-no questions.
Building the plan taught me as much about consistency and patience as it did about running. The goal isn’t to have a perfect week — it’s to string together months of good-enough weeks and arrive at race day with a body that’s trained but not worn down.