Running Injuries: Causes, Treatment and How to Prevent Them

Why runners get injured

Running injuries account for 70à 80% overuse injuries. Not a single traumatic moment, not a misstep, not a fall. Just too much, too fast, too soon. The body gives signals that are ignored until a real complaint arises.

The most common causes:

Building up too quickly is responsible for the majority of all running injuries. Tendons, articular cartilage and bones adapt more slowly to training loads than muscles and the cardiovascular system. Your condition improves faster than your structures can handle. That gap is dangerous.

Insufficient recovery is chronically underestimated. Recovery is not inactivity, it is the moment when your body becomes stronger. Anyone who trains day after day without room for adaptation accumulates fatigue until something collapses.

Technique errors such as overstriding, too low a cadence or weak hip stabilization increase the load on specific structures with each step. At 5 kilometers you take about 4,000 steps. A small mistake is therefore repeated thousands of times.

Shoe choice plays a role, although it is smaller than the shoe industry suggests. The wrong shoe for your foot and running style can contribute to overload of certain structures.

Muscle imbalances and weak stabilizers, especially in the hip and trunk, are an underestimated risk factor. A weak gluteus medius leads to unstable knees. A weak core increases the burden on the low back and pelvis.

The most common running injuries

The subpages below cover the most common ones in detail. For IT band syndrome and plantar fasciitis you will find information on the prevention page.

The signal that most runners ignore

Pain while walking is a signal, not discomfort to walk through. The distinction every runner should know:

Muscle fatigue and heaviness after a hard workout: normal, expected, and part of the process.

Stiffness the morning after training that disappears after a few minutes of exercise: acceptable, sign of training load.

Pain that starts and increases while walking: stop. Don't slow down, stop. This is the body signaling an overload that is still reversible.

Pain that is already present at the start of a training: do not continue. An injury that you ignore becomes a chronic injury that takes months instead of weeks.

The 10% rule and why it works

The most proven rule of thumb in the running world: never increase your weekly training volume by more than 10% per week. Did you run 30 km last week? Then 33 km will be the maximum next week.

The rule is a simplification of a more complex principle: load must always be proportional to recovery capacity and structural capacity. For beginners, 10% is sometimes too much. For advanced runners with a long training background, more can sometimes be fine.

But as a rule of thumb for most recreational runners: respect it. Most runners who get injured have increased their volume or intensity too quickly in the weeks before.

Injury prevention: the three pillars

It is not possible to completely rule out injuries. They do reduce significantly. Three pillars contribute the most:

Strength training

Twice a week, targeted power transport demonstrably reduces the risk of injury among runners. Focus on hip and glute strength (gluteus maximus and medius), eccentric calf strength and trunk stability. You can read more about the right exercises on the strength training page.

Smart training structure

Periodization, recovery weeks and conscious alternation of intensity and volume. Every three à four weeks one week with 20 à 30% less volume. The periodization page explains how to organize this in practice.

Listen to your body

Take early signals seriously, don't wait until something really hurts. A week of rest at the first sign of overload is always cheaper than six weeks of recovery from a complete injury.

You can find everything about prevention detailed on the prevention page.

The subpages: a complete guide for each injury

Injury prevention for runners

What you can do before an injury occurs: the correct structure, strength training, mobility and recognizing early signals.

Achilles tendon injury

Achilles tendinopathy is one of the most common and persistent running injuries. Causes, the difference between insertional and midportion tendinopathy, and the best treatment.

Shin splints

Pain on the inside of the shin mainly affects beginners and runners who resume too quickly after a break. How to distinguish it from a stress fracture and how to treat it.

Runner's knee

Pain around the kneecap when walking, climbing stairs or sitting for a long time. Almost always a hip strength problem, not a knee problem.

Cramps while running

Muscle cramps during training or competition: what are the causes, what helps immediately, and how do you prevent them?

Return after injury

How do you rebuild safely after an injury? The biggest pitfall is resuming too quickly. A practical guide to the comeback.

When do you go to a doctor or physiotherapist?

Not every injury requires professional help. But there are cases where you can't ignore it:

Consult a doctor or physiotherapist if an injury lasts longer than two à persists for three weeks despite rest, if you have pain during normal daily activities such as climbing stairs or walking, if the pain was acute and severe at a specific moment while walking (possible tear or stress fracture), or if you have the same injury for the third or fourth time.

A good sports doctor or physiotherapist not only helps with treatment, but also with identifying the cause. The same injury recurring is a signal that the underlying cause has not been addressed.

In summary

Running injuries are largely preventable. Train with build-up, consciously recover, build strength in the right muscle groups and don't ignore early signals. If an injury does strike, rest is not the end point but the starting point of a smart recovery process.

→ Start with the prevention page if you want to stay injury-free.
→ Already injured? Read the relevant subpage and then the comeback guide.