Running too fast too often. Skipping rest days. Jumping back in too quickly after time off. Sound familiar?
If you find yourself constantly battling shin splints, runner's knee, Achilles pain or plantar fasciitis, you are far from alone. Studies suggest that between 50–80% of recreational runners pick up an injury in any given year. But here's what most runners don't realise: the majority of those injuries are preventable.
Many runners assume injuries happen because they're getting older, have "bad knees," or simply had an unlucky session. But research consistently shows otherwise.
The short answer: most running injuries come down to doing too much too soon, not recovering properly, or running at the wrong intensity too often. Addressing those three things drops your injury risk significantly.
Whether you're a complete beginner or a seasoned runner returning from a niggle, these five evidence-based strategies will help you stay healthy, consistent, and on the road for longer.
1. Don't Increase Volume Too Quickly
This is one of the single biggest contributors to running injuries, and one of the most common mistakes runners make at every level.
Your cardiovascular fitness can improve noticeably in a matter of weeks, but tendons, ligaments, and bones take considerably longer to adapt to increased load. This mismatch is why so many runners feel fit enough to do more before their body is actually ready for it.
Coach tips:
- Increase weekly mileage by around 5–10% per week
- Every 3–4 weeks, reduce mileage by 15–20% for a planned recovery week
- Avoid increasing mileage and adding speed work in the same week
- If returning after injury, increase frequency before distance. For example, four shorter runs rather than two longer ones at the same total distance
Importantly, it's not just weekly volume that matters. Recent research tracking over 5,200 runners found that increasing the length of a single long run by more than 10% significantly increased overuse injury risk. Spread any increases across your week rather than adding them all to one session.
Simple rule: if soreness is still present 48 hours after a run, hold mileage steady for another week before progressing.
2. Recovery Is Part of Training, Not an Optional Extra
Many runners focus intensely on what happens during the run and overlook what happens afterwards. But recovery is when your body actually adapts, rebuilds, and gets stronger. Without it, training just breaks you down.
Coach tips:
- Aim for 20–30g of protein within 1–2 hours of finishing a run
- Include carbohydrates after longer sessions to replenish glycogen stores
- Aim for 7–9 hours of sleep per night; this is where the majority of physical repair happens
- Schedule at least one complete rest day each week
- Walking, gentle cycling, and mobility work can aid recovery more effectively than complete inactivity on easier days
Quick self-check: your resting heart rate is often one of the earliest indicators of accumulated fatigue. If it's consistently elevated by 5–10 beats above your normal baseline, consider reducing your training load for a few days before pushing on.
One often-overlooked recovery habit is what you put on your feet after a run. Swapping into a supportive, cushioned slide rather than flat shoes or bare feet helps offload tired legs and soothe sore joints, a small habit that adds up over a full training block. Enertor Recovery slides are designed with exactly this in mind.
3. Easy Runs Should Actually Feel Easy
One of the most common (and most damaging) mistakes recreational runners make is running every session at a moderate-to-hard effort. This leads to what coaches call the "grey zone": too hard to allow proper recovery, not hard enough to drive meaningful fitness gains.
Research on elite endurance athletes consistently shows that approximately 80% of training is performed at genuinely low intensity. The same principle applies to recreational runners, and the results are clear: more easy running leads to better long-term performance and significantly fewer injuries.
Coach tips:
- Use the "conversation test": you should be able to speak comfortably in full sentences
- Save hard efforts for dedicated interval, tempo, or race sessions
- Slow down on recovery runs, even if it feels frustratingly slow
- Easy running improves aerobic fitness while placing far less stress on muscles, tendons, and joints
Remember: running harder is not the same as training smarter.
4. Reduce Repetitive Impact Where You Can
Every running step creates force that travels through your feet, ankles, knees, and hips. The vertical ground reaction force during running has been reported to be approximately 3–5 times bodyweight and a runner covering 30 miles per week may take upwards of 45,000 of those steps. Small, consistent reductions in impact add up meaningfully over time.
Running shoes with good cushioning play an important role here, as do shock-absorbing insoles which can help further reduce the forces transmitted through the foot and lower limb with each stride. Enertor running insoles have been clinically tested to help reduce injury risk, helping runners stay more consistent in their training.
Beyond kit, surface choice matters too. Trail running and grass tend to be more forgiving on the joints than tarmac or concrete, which are harder and have less give. Mixing up your surfaces where possible is a simple and effective way to reduce cumulative load.
5. Strength Training Is Injury Prevention
This is one of the most well-evidenced injury prevention strategies available to runners, and one of the most consistently underused.
During a one-hour run, each foot will hit the ground approximately 10,000 times, with a peak ground reaction force of 2.5–2.8 times bodyweight. The stronger and more resilient your muscles are, the better they can absorb and manage those forces before they stress tendons, joints, and bones.
We recommend incorporating at least two strength sessions per week. These don't need to be long; even 15 minutes makes a meaningful difference. Focus in particular on:
Calves: the calf-Achilles complex is responsible for absorbing and returning a huge amount of force during running. Weak calves are one of the most common contributors to Achilles issues and plantar fasciitis.
Glutes and core: gluteal and core strength help stabilise the pelvis and control leg alignment during running. Weakness here creates excessive stress on the knees, hips, ankles, and surrounding soft tissues.
The 15-Minute Runner Strength Routine 2× per week:
- 3 × 10 Squats
- 3 × 10 Lunges each side
- 3 × 15 Calf Raises (straight leg)
- 3 × 15 Bent-Knee Calf Raises (targets the soleus)
- 3 × 30 seconds Side Planks
- 3 × 10 Single-Leg Glute Bridges
What If You're Already Injured?
Stick to your rehab plan and choose caution over enthusiasm. It's very easy to return to running before the body is truly ready and cause further damage that sets your timeline back significantly.
If in doubt, speak with a physiotherapist who can develop a return-to-run plan tailored to your specific injury and fitness level. There's no shortcut worth taking here.
FAQ
Q: What are the most common running injuries?
A: The most frequently reported running injuries are shin splints, runner's knee (patellofemoral pain), Achilles tendinopathy, plantar fasciitis, and IT band syndrome. The good news is that all of these are closely linked to training load errors, meaning they are largely preventable with smart progression and recovery.
Q: How do I know if I'm overtraining?
A: Key signs include persistent heavy or fatigued legs that don't clear after a rest day, a resting heart rate consistently elevated above your normal baseline, declining performance despite regular training, disrupted sleep, and a loss of motivation. If several of these apply, reduce your training load before increasing it again.
Q: Does stretching prevent running injuries?
A: The evidence on static stretching as injury prevention is mixed. Dynamic warm-up movements before a run (such as leg swings, hip circles, and walking lunges) are better supported by research. Strength training and appropriate training load management have considerably stronger evidence for injury prevention than stretching alone.
Q: Is it safe to run through pain?
A: It depends on the type of pain. General muscle fatigue and mild post-run soreness that clears within 24–48 hours is normal. Sharp pain during a run, pain that worsens as you run, or soreness that persists beyond 48 hours are all signals to rest and, if it continues, seek a professional opinion. Running through genuine injury warning signs almost always makes recovery longer.
Q: How long should I rest if I pick up a running injury?
A: This varies widely depending on the injury. As a general principle, if pain is present during a run, take at least 2–3 days off and reassess. If it returns when you run again, seek a physiotherapy assessment rather than continuing to manage it yourself. Early professional input almost always shortens total recovery time.
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Written by: Emily Freeman, Triathlon and Running Coach. 2.52 Marathoner and Ironman World Championship podium athlete.