Why you keep getting injured when mileage goes up

Most runners who keep breaking down on a buildup have decided they are injury prone. The training was going well, the mileage was climbing, and then a knee or a calf or an Achilles put a stop to it, again. So they conclude their body cannot handle real volume. Usually that is the wrong conclusion.

Look at the four weeks before it hurt and the cause is usually sitting right there in the training. The week grew faster than the legs could adapt to. The recovery days never recovered anything, because they were run too hard. Two quality sessions landed close enough that the second borrowed from legs still paying off the first. All three are choices, and all three are visible in the log before anything starts to hurt.

Take a normal buildup. You go from forty miles to fifty in one week because the plan said fifty and you felt good. The long run jumps from fourteen to seventeen. Two easy days drift down near marathon pace because you felt strong that day. By the third week a calf that was fine all month aches on every run. Nothing dramatic happened. The load simply climbed faster than the tissue could adapt, and the easy days that were supposed to absorb it were doing the opposite.

The fix is rarely to stop running. It is to change the shape of the climb before it breaks. Smaller jumps, held longer. Easy days slow enough to be real recovery. Quality sessions spaced so the second one starts on fresh legs. The body adapts to load it can absorb and breaks on load it cannot, and the difference between the two is mostly how the week is built.

This is the kind of thing I watch every week. When the load is starting to outrun the legs, it usually shows up in the training before it shows up in the body, in an easy pace creeping up or a jump that is too big for the week behind it. Spotting it there means adjusting the climb while it is still a programming choice.

One honest limit. Once something hurts on every run, that is a physio's call, and I will tell you so. What I can read is the buildup that keeps sending you there, because that part is training, and training is the thing I can change.