Almost everyone who runs regularly deals with an injury at some point — new runners just starting out and experienced runners who've logged years of mileage alike. Research shows runners face an average injury rate of nearly 40-45% per year, and novice runners face more than double the injury risk of recreational runners.
What Are the Most Common Running Injuries?
Pulling together several studies on running injuries, five conditions show up again and again.
Achilles Tendinopathy
Pain along the back of the ankle at the Achilles tendon, often worst first thing in the morning or at the start of a run, then easing once the body warms up. It develops from repetitive loading, especially when speed or distance increases too quickly.
Medial Tibial Stress Syndrome (Shin Splints)
Pain running along the inner shin bone. Very common in new runners who ramp up mileage too fast, or who run frequently on hard surfaces.
Runner's Knee (Patellofemoral Pain Syndrome)
Pain around or behind the kneecap, usually worse running downhill, going down stairs, or sitting with a bent knee for a long time. This is one of the most frequently reported injuries across all levels of runners.
Plantar Fasciitis
Heel pain that's typically sharpest with the first few steps in the morning, or after sitting for a while and standing back up.
Ankle Sprains
Usually from an accident, uneven ground, or weak muscles around the ankle joint.
Most of these injuries don't come from a single cause — they're usually a mix of factors: ramping up distance or speed too quickly, muscles that aren't strong enough to absorb repeated impact, not enough recovery time, or returning to running before the body is actually ready.
How to Treat and Manage a Running Injury Correctly
The old idea that you have to stop running completely to recover isn't always true. A randomized controlled trial in patients with Achilles tendinopathy compared a group who stopped all activity for 6 weeks against a group who kept running and jumping under a pain-controlled protocol — at 12 months, outcomes were the same. Both groups improved significantly.
What matters more than complete rest:
In the first few days: Reduce activities that trigger pain. Ice if there's noticeable swelling. Temporarily adjust your running — shorter distance, slower pace, or swap in low-impact activities like cycling or swimming.
Physical therapy treatment: The evidence consistently points to one thing — strengthening the muscles around the affected joint. For runner's knee specifically, a meta-analysis found that strengthening the hip along with the knee reduced pain and improved activity levels better than strengthening the knee alone.
Can I Keep Running While Injured? What Are the Limits?
Many runners have a race on the calendar or just need to keep moving despite some discomfort. Physical therapists commonly use a framework called the pain monitoring model, built on research into treating Achilles tendinopathy. The general principles:
- Pain during or after running should stay at a tolerable level — not enough to change your running form or cause a limp
- Pain shouldn't get worse overnight, and should ease back down by the next morning
- If pain keeps building week over week, that's your signal to cut back on volume or intensity right away
- Don't push through if there's obvious swelling, a limp when walking, or sudden sharp pain — these can signal something more serious
These limits are individual — the same injury can behave very differently from person to person. Getting assessed by a physical therapist before deciding to keep running is safer than guessing on your own.
Preventing Re-Injury With Weight Training
This is where a lot of runners go wrong — thinking that getting better at running means only running. A large meta-analysis covering over 26,000 participants found that strength training cut sports injuries to less than a third compared to runners who didn't strength train, and nearly halved overuse injuries.
Even more notable: follow-up research found a dose-dependent effect — a 10% increase in strength training volume reduced injury risk by more than 4 percentage points.
Muscle groups runners should prioritize:
Hips: Strong hip muscles control knee and leg movement while running, reducing the rotational stress linked to runner's knee and IT band syndrome. Useful exercises: hip thrusts, clamshells, side-lying leg raises.
Calves and Achilles tendon: Eccentric loading — like slowly lowering your heel off a step — builds the Achilles tendon's tolerance to repeated impact.
Core: Keeps running form stable, reducing the sideways sway that builds up stress at the joints over time.
Quadriceps and hamstrings: Absorb impact on foot strike and help drive speed. If they're not strong enough, the knee and Achilles tendon end up compensating.
Aim for strength training 2-3 times a week, on days without hard running sessions, or after an easy run so your legs aren't fatigued heading into a key workout.
When Should You See a Physical Therapist?
If self-management hasn't helped within 1-2 weeks, or if pain is interfering with everyday walking or showing obvious swelling, it's time to get assessed by a physical therapist for a personalized treatment plan — rather than guessing and letting it become chronic.
References
- A systematic review of running-related musculoskeletal injuries in runners — Kakouris et al., 2021, Journal of Sport and Health Science | 🔬 Systematic Review
- What are the main running-related musculoskeletal injuries? — Lopes et al., 2012, Sports Medicine | 🔬 Systematic Review
- Incidence of Running-Related Injuries Per 1000 h of running — Videbæk et al., 2015, Sports Medicine | 🔬 Systematic Review + Meta-Analysis
- Continued sports activity using a pain-monitoring model in Achilles tendinopathy — Silbernagel et al., 2007, American Journal of Sports Medicine | 🔬 RCT
- Hip and Knee Strengthening for Patellofemoral Pain — Nascimento et al., 2018, JOSPT | 🔬 Systematic Review + Meta-Analysis
- The effectiveness of exercise interventions to prevent sports injuries — Lauersen et al., 2013, British Journal of Sports Medicine | 🔬 Systematic Review + Meta-Analysis
- Strength training as superior, dose-dependent and safe prevention of injuries — Lauersen et al., 2018, British Journal of Sports Medicine | 🔬 Systematic Review + Meta-Analysis