If there is one change that could have the single biggest impact on your running longevity, it is adding strength training to your weekly routine. The evidence is now overwhelming: runners who perform structured strength work twice a week reduce their injury risk by up to 50 per cent compared with those who rely on running alone. Yet the majority of recreational runners still skip it, either because they do not know where to start or because they fear that lifting weights will make them slow and heavy. Neither concern holds up to scrutiny.
The mechanism behind strength training's protective effect is straightforward. Running is a repetitive, single-plane activity that places enormous stress on a relatively small set of muscles and connective tissues. Over time, the accumulated load exceeds the tissue's capacity to adapt, and injury follows. Strength training increases that capacity — stronger muscles, tendons, and bones can absorb more force before failing, and stronger stabiliser muscles around the hips and ankles reduce the compensatory movement patterns that lead to overuse injuries.
The key muscle groups to target are the glutes, quadriceps, hamstrings, calves, and core. A simple but effective programme might include squats, Romanian deadlifts, single-leg step-ups, calf raises, and planks, performed as two sets of eight to twelve repetitions for each exercise. The weight should be challenging enough that the final two repetitions of each set feel genuinely difficult. This is not about becoming a powerlifter — it is about building functional strength that directly supports the demands of running.
Timing matters less than consistency, but most coaches recommend placing strength sessions on easy run days rather than after hard workouts or long runs. This allows the body to absorb the combined training stress without compromising the quality of key running sessions. The total time commitment is modest — 30 to 40 minutes per session, twice a week — and the return on investment, measured in fewer injuries and more consistent training blocks, is enormous. If you are not strength training, you are leaving both performance and durability on the table.