Training for the KL Marathon? Four Marathon Training Injuries I See Most in October

A good marathon plan builds fitness gradually and leaves enough time for the body to recover.

Marathon training injuries often appear in the final weeks before race day. By then, the long runs are longer, the speed sessions feel more urgent, and tired legs have had weeks of repeated load. For runners preparing for the Kuala Lumpur Standard Chartered Marathon or Kuching Marathon, this is the point when a small ache can either settle with sensible changes or become an injury that ends the race plan.

As an orthopaedic surgeon, the four problems I commonly assess during a busy marathon build-up are runner’s knee, iliotibial band syndrome, shin splints and bone stress injuries, including stress fractures. They can all begin after a training error. However, the location and pattern of pain are different. Those details help us decide whether a runner may reduce and adjust training, or should stop running and be examined.

This article explains those patterns in plain language. It is general information, not a diagnosis. Persistent running pain deserves an individual assessment.

KL Marathon Training Dates

As checked on 13 August 2026, the official KLSCM race weekend schedule confirms two event days at Dataran Merdeka. The 10km, 5km Fun Run and Kids Dash are on Saturday, 3 October 2026. The full marathon starts at 3:30 am and the half marathon at 4:45 am on Sunday, 4 October 2026. Therefore, saying that KLSCM runs on 3–4 October is correct, but the full and half marathons are specifically on 4 October. The organiser notes that schedules may change.

The official Kuching Marathon website lists Sunday, 27 September 2026 at Padang Merdeka, Kuching. That places Kuching Marathon one week before the KLSCM full and half marathons.

There is also a Malaysian endurance swim on the same weekend. Malaysia Open Water Swimming lists the Perhentian 16KM Challenge for Saturday, 3 October 2026, with 500m, 1.5km, 4km, 10km and 16km options. Its event page places the swims around Pulau Perhentian Besar. Swimmers and triathletes should remember that a hard open-water session is still training load. It should not automatically be treated as a recovery day.

Why Marathon Training Injuries Rise Late in the Plan

Most running overuse injuries are not caused by one bad step. They develop when training load rises faster than the body can adapt. Load is more than weekly distance. It also includes pace, hills, intervals, long runs, strength work, training surface and how many hard days sit close together.

Recovery matters just as much. Sleep, food, rest days, work demands, illness and previous injuries all affect how much training the body can tolerate. A distance that was comfortable last year may be too much after a recent break.

Common training errors include:

• Adding distance, speed and hills during the same week.
• Trying to replace missed sessions with a sudden high-mileage week.
• Running hard on tired legs for several days in a row.
• Changing shoes, surface or running style abruptly.
• Ignoring pain because the race is close.
• Under-fuelling, poor sleep or too little recovery.

There is no single weekly percentage that guarantees running injury prevention for everyone. A safer plan responds to symptoms, keeps easy days easy, changes one training demand at a time, and includes recovery.

The Four Injuries at a Glance

Problem	Typical pain pattern	Common training link	Important warning
Runner’s knee	Dull ache at the front of or around the kneecap. It may hurt with running, stairs, squats or sitting with a bent knee.	A quick rise in distance or intensity, together with reduced hip or thigh muscle capacity.	Stop if pain is worsening, changes your stride, or comes with marked swelling, locking or giving way.
ITB syndrome	Sharp or burning pain at the outer side of the knee, often appearing at a repeatable point during a run.	More mileage, hills, downhill running or repeated laps in one direction.	Do not keep running once the pain makes you alter your gait.
Shin splints	A broader sore area along the inner border of the shin. It may ache during and after exercise.	Sudden changes in running days, distance, intensity, hills, surface or footwear.	A small, sharply localised tender point needs assessment for a bone stress injury.
Stress fracture	Pinpoint bone pain that may progress from pain with running to pain with walking, rest or at night.	Repeated overload without enough time, sleep or energy for bone recovery.	Stop impact exercise and arrange a medical assessment promptly.

1. Runner’s Knee: Pain Around the Kneecap

Runner’s knee usually means patellofemoral pain. This is pain at the front of the knee or around the kneecap. It often begins gradually. Running, stairs, hills, squats and sitting for a long time with the knee bent may make it worse.

The name can be misleading. Runner’s knee does not always mean that the kneecap is damaged, and not every pain at the front of the knee is the same condition. Tendon pain, cartilage problems and other injuries can feel similar. An examination helps identify the likely source.

For many people, runner’s knee treatment starts without surgery. It may include reducing activities that bring on pain, then rebuilding load gradually. A guided exercise programme often works on the quadriceps, hip muscles and movement control. Shoes should be comfortable and suitable for the runner, but a new shoe alone does not correct a sudden training overload.

Do not use painkillers simply to hide knee pain and finish a long run. If the pain is getting worse, affects normal walking, or causes swelling, locking or giving way, stop and seek an assessment.

2. ITB Syndrome Running Pain: The Outer Side of the Knee

The iliotibial band, or ITB, is a strong band of tissue along the outside of the thigh. ITB syndrome usually causes pain near the outer side of the knee. A runner may feel well at the start, then develop pain at roughly the same distance or time in each run.

ITB syndrome running pain is often linked with a change in mileage, hills or downhill training. Repeatedly running around a track in the same direction may also irritate the outer knee. However, outer knee pain can have other causes, so the location alone does not confirm the diagnosis.

Early management usually means reducing the provoking run load. Pain-free cross-training may help maintain fitness. Rehabilitation can address hip strength, leg control, flexibility and the runner’s gradual return to distance. Foam rolling may feel useful for some runners, but it should not be used to force through sharp pain or replace load management.

3. Shin Splints in Malaysia: A Broad Ache Along the Shin

Shin splints, also called medial tibial stress syndrome, usually cause pain along the inner border of the shinbone. The tender area is often spread over a longer section rather than one tiny spot. Pain can occur during and after running, and mild swelling is possible.

I often see shin splints in Malaysia after runners add more road kilometres, hills or speed sessions too quickly. Worn footwear and a sudden surface change may add to the load. Rest from painful running, followed by a gradual return, is usually more sensible than trying to toughen the shin with repeated painful runs.

The important point is that not all shin pain is a shin splint. Tendon problems, chronic exertional compartment syndrome and bone stress injuries can feel similar. If the pain is sharply localised, keeps worsening, or does not settle when the training load is reduced, get it checked.

4. Stress Fracture Symptoms: The Pain Not to Run Through

A bone stress injury develops when repeated load breaks bone down faster than the body can rebuild it. The earliest stage may be a stress reaction. Continued impact can allow it to progress to a small crack, or stress fracture.

Early stress fracture symptoms may be easy to dismiss. Pain starts in one specific spot and may appear only near the end of a run. As the injury progresses, it can begin earlier, linger afterwards, hurt during normal walking, cause a limp, or ache at rest and at night. There may also be swelling.

Pinpoint tenderness over a bone is a warning sign. Stop running and jumping, and arrange an assessment. Do not test it with another long run. Early X-rays can look normal, so a normal first X-ray does not always exclude a bone stress injury. Depending on the examination and the site involved, further imaging such as an MRI may be needed.

Risk is higher when training load rises quickly. Too little recovery, low energy intake, poor bone health and previous stress injury can also contribute. Repeated stress fractures, menstrual changes, unexpected weight loss or ongoing fatigue should prompt a wider review of nutrition, hormones and bone health.

Which Pain Means Stop Running?

A mild ache is not automatically dangerous. However, pain is useful information. Stop the session and seek medical advice when:

• Pain is sharp, severe, or getting worse as you continue.
• You limp or change your stride to protect the leg.
• There is one small, very tender point over a bone.
• Pain is present during walking, at rest or at night.
• There is marked swelling, bruising or difficulty bearing weight.
• The knee locks, repeatedly gives way, or cannot move normally.
• Numbness, weakness or severe tightness develops in the leg or foot.
• A joint becomes hot and red, especially with fever or feeling unwell.

Sudden severe pain, deformity, inability to bear weight, or new numbness or weakness needs urgent assessment. It is better to miss one training session than to turn a manageable problem into a longer injury.

A Practical Load-Management Plan for the Final Weeks

Running injury prevention does not require a perfect spreadsheet. It does require honest decisions. Use these principles during the final KL Marathon training block:

1. Count every type of load. A fast session, hills, gym work and a long run all stress the legs, even if weekly kilometres look reasonable.
2. Avoid stacking hard days. Place easy or rest days between demanding sessions.
3. Change one demand at a time. Do not raise distance, pace and hill work together.
4. Respect symptoms early. Reduce or stop the activity that causes pain. Pain-free cycling or swimming may be useful, but only if it does not irritate the injury.
5. Strengthen consistently. Hip, thigh, calf and foot strength can help the body manage running load. Start new strength work gradually.
6. Fuel and recover. Eat enough for the work you are doing. Include rest, sleep and suitable hydration for Malaysia’s heat and humidity.
7. Do not cram missed mileage. Fitness is built over months. A last-minute mileage surge is more likely to add fatigue than useful race fitness.
8. Taper with confidence. Reducing training before the race lets fatigue fall while much of your fitness remains.

For broader day-to-day advice, see my guide on how to prevent knee pain and stay active . That article covers general knee health. This guide focuses specifically on marathon training injuries such as runner’s knee, ITB syndrome, shin splints and stress fractures.

Can You Still Start the Race?

The answer depends on the diagnosis, the severity and how the leg responds to a graded return. Race day should not be the first test after an injury. A runner should be able to manage normal walking and appropriate training without a return of symptoms before considering a long race.

A suspected stress fracture is different from a simple short-lived muscle ache. Do not race on a suspected bone stress injury. Get a diagnosis and return only after appropriate healing and medical clearance. Running through it can make the injury worse and extend recovery.

Conclusion

The final weeks before Kuching Marathon and KLSCM are a high-risk period for marathon training injuries because distance, intensity and fatigue can peak together. Runner’s knee usually causes pain around the kneecap. ITB syndrome tends to hurt at the outer knee. Shin splints cause a broader ache along the inner shin. In contrast, stress fracture symptoms are often sharply localised and can progress to pain with walking, rest or sleep.

Reduce load when pain begins. Stop when pain worsens, changes your stride or suggests a bone injury. Most importantly, do not let a fixed race date push you past the warning signs your body is giving you.

If knee or shin pain persists during KL Marathon training, consult an orthopaedic surgeon for an accurate diagnosis and a return-to-running plan suited to you.