Do runners need strength training? A plain-English guide

What strength training actually means for runners

Strength training means working your muscles against some kind of resistance: your own bodyweight, light dumbbells, kettlebells or resistance bands. It's sometimes called resistance training or lifting, which can sound like a gym full of mirrors. For running, it's much simpler than that.

You're not trying to build big muscles. You're teaching your hips, glutes (the muscles in your bottom), calves and core to hold you steady while you run. Controlled reps, good form, and finishing feeling worked rather than wrecked — that's the whole idea.

If you're completely new to running, it's worth getting a gentle routine going first — our guide to starting running for beginners walks through the first month. Add strength once running itself feels less of a shock to the system.

Why it helps your running

Running is thousands of small landings on one leg at a time. Muscles and tendons that are used to a bit of load cope with that better than ones that only ever meet the same movement over and over. Stronger hips and glutes mean less wobble, and steadier knees. Stronger calves and ankles mean a springier push-off.

The payoff you notice most is late in a run. When you're tired, form is the first thing to go — shoulders drop, steps get short, knees drift inwards. Strength work gives you something to hold on to. Runners who lift tend to get hurt less and finish sessions looking more like themselves.

It also helps speed. The same effort that feels hard in an interval session feels a touch more controlled when your legs are stronger, because you're wasting less energy bracing and stabilising.

The moves that do the most work

You don't need a long menu. A handful of simple, repeatable moves covers almost everything a runner needs:

• Squats (bodyweight or holding a weight at your chest) — sit back, knees tracking over toes
• Walking lunges and split squats — one leg at a time, which is how you actually run
• Romanian deadlifts or single-leg versions — hinge at the hips with a flat back
• Glute bridges — squeeze at the top and pause for a second
• Calf raises, standing and on one leg — stiff ankles, slow and controlled
• Planks and side planks — front and side, for the core that keeps you upright
• Leg swings before running — a gentle warm-up, not a workout

Two or three sets of 8–12 controlled reps of each is plenty to begin with. Lighter than you think, smoother than you'd guess.

Fitting it around your running

The simplest rhythm is two sessions a week, 20–40 minutes each, on days when you're not doing your hardest run. Plenty of runners do them after an easy run, or on a rest day when they'd otherwise be sitting down. Avoid stacking a heavy leg session the day before intervals or a long run.

It changes through a training block, too. Early on, lighter weights and higher reps build the habit. Later, a few heavier sets of the big moves build force. In the last week or two before a race, you ease right off — the work is already in the bank.

Eat something small beforehand if you're going straight from work, and treat it like any other session — see what to eat before a run for the short version. And if anything hurts in a way that changes how you move, see a GP or physio rather than pushing on.