24/03/2026
The suns been out, you’ve seen more runners about and so you think it’s time to jump up in distance to make the most of the weather!….
From 5k to 10k in a few weeks” sounds great on paper… but it’s not always how the body works 👀
We see it all the time 👇
“I was doing really well… then suddenly my knee/Achilles/foot started hurting”
Here’s why ⬇️
🏃♂️ Your cardiovascular fitness can improve in as little as 2–4 weeks
💪 Muscles adapt and get stronger relatively quickly
🦴 But tendons, bones and connective tissue? They can take 8–12+ weeks to properly adapt to increased load
That mismatch matters.
When training load increases faster than your tissues can tolerate, the body doesn’t fail immediately… it accumulates stress over time.
👉 This is where overload injuries creep in
👉 This is why pain often appears “out of nowhere”
In simple terms — injury risk isn’t just about distance, it’s about the relationship between load and capacity.
When load exceeds what your tissues are prepared for, breakdown becomes far more likely.
And it’s worth remembering 👇
Going from 5k to 10k is effectively doubling your distance.
For seasoned, well-conditioned runners — that can be manageable.
But for many, especially those who have only just reached 5k, that jump represents a significant increase in load and stress on the body.
In fact, recent research shows that even a single session increase beyond ~10% of your recent running distance can significantly increase injury risk by up to 64%
Research consistently shows that rapid increases in training load are one of the biggest predictors of running-related injury.
✔️ Gradual load progression beats big jumps
✔️ Frequency before distance
✔️ Strength training improves tissue capacity and resilience
That’s exactly why our running programmes are built differently 👇
Led by experienced running coaches, supported by clinically trained sports therapists, and guided by biomechanics & rehabilitation specialists, we bridge the gap between performance and injury prevention.
Using movement analysis and objective data, we tailor progression based on how your body is actually responding — not just what a plan says on paper, or what the rest of the group is experiencing, you’re an individual!
We’re all for setting big goals 🙌
…but the best progress is the kind that keeps you running, not resting.
Your lungs might be ready for 10k… your tendons might not.
And remember — it’s not just about doing too much.
Too little or inconsistent training can reduce tissue capacity and increase injury risk too.
Build it properly. Build it to last 👊
• Frandsen et al. (2025) – Running distance spikes & injury risk
• Garmin RUNSAFE Study (2024) – Training load & injury incidence
• Franks et al. (2025) – Load, mileage & injury severity
• Bertelsen et al. (2017) – Load vs capacity model
• Gabbett TJ – Training load & injury framework
