Why Overuse Injuries Peak in Summer Training
Longer evenings. Better weather. A bit more headspace to actually train properly instead of squeezing in a rushed gym session before work. Summer is when a lot of people quietly ramp things up — more miles, an extra football session, paddle with mates that’s turned into three times a week instead of one.
It’s also, reliably, when our clinic sees the biggest spike in overuse injuries all year.
If you’re someone who trains hard and hates being told to “just rest,” this is worth five minutes, because the cause isn’t bad luck or a weak ankle. It’s almost always one specific, fixable thing.
"Too much, too soon" isn't a cliché — it's the actual mechanism
You’ve heard the phrase. It sounds like generic advice your gran might give you. But it’s also one of the most consistently supported explanations in sports injury research, and recent studies have got specific about exactly what counts as “too much.
A large cohort study tracking over 5,000 runners via GPS watch data found something genuinely useful: it wasn’t the gradual week-to-week build-up that mattered most. It was a single session where the distance jumped more than 10% beyond the longest run done in the previous 30 days. One overambitious long run, on a nice evening, with no real ramp-up — and injury risk rose sharply from that one session alone.
That’s a useful reframe. It’s not really about your overall fitness level or how committed you are. It’s about whether any individual session has asked your tendons, joints, and connective tissue to do something meaningfully bigger than they’ve recently been conditioned for.
Why this catches fit, motivated people specifically
This is the bit that surprises people who consider themselves disciplined. Overuse injuries aren’t really a beginner’s problem — they’re often a competent athlete’s problem, because:
- You can outrun your tissue tolerance long before you outrun your cardiovascular fitness. Your lungs and legs might genuinely feel ready for a longer run or a harder session. Your tendons and connective tissue adapt on a slower timeline than your aerobic system does, so feeling capable isn’t the same as being conditioned for the load.
- Niggles get pushed through, not addressed. A bit of tightness in the Achilles, a dull ache after football — the instinct for anyone training seriously is to push on rather than back off, especially with a half-marathon or a summer of five-a-side ahead.
- Progression gets skipped when motivation is high. Good weather and a free evening are exactly the conditions where people add an extra session or a longer distance impulsively, rather than as part of a planned build.
None of this is about a lack of willpower. It’s that the body’s adaptation timeline doesn’t care how motivated you are this week.
What actually reduces the risk
A few practical shifts make a real difference without requiring you to train less overall:
- Cap single-session jumps, not just weekly totals. If your longest run in the past month was 8K, a sudden 11K+ session is the exact pattern linked to spiking injury risk — even if your weekly mileage looks reasonable on paper.
- Treat niggles as information, not inconvenience. Persistent tightness or a dull ache that doesn’t settle within a day or two is your tissue telling you the current load is outpacing its recovery — worth addressing early rather than three weeks later when it’s a proper injury.
- Build recovery into the plan, not just hard sessions. Alternating harder and lighter days gives connective tissue time to adapt to the new demand rather than compounding fatigue.
If something's already nagging at you
If you’re reading this because something specific is bothering you — an Achilles that’s been “not quite right” for a couple of weeks, a knee that complains on longer runs — that’s usually the point where a proper assessment is genuinely worth more than another week of hoping it settles on its own.
A biomechanical MSK assessment looks at how you’re actually moving and loading, not just where it hurts, which is often the difference between fixing the cause and just calming down the symptom for a fortnight.
Worth reading next
This month we’re covering the most common ways summer training catches people out — including which sports tend to cause which injuries, and when rest genuinely isn’t the answer. If paddle or racquet sports are your thing, we’ll be covering exactly why elbows, hips, and knees tend to take the brunt of it next.
You can also browse Sports Injuries on our site for more on specific conditions.
Book an assessment
If something’s been niggling for more than a couple of weeks, it’s worth getting ahead of it before a busy training block makes it worse. You can book an assessment online at a time that fits around work and training.
