Running Injury Not Getting Better? Why Rest Alone Isn’t Enough

Running injury not getting better? You’ve done the sensible thing. You stopped running, gave it a few weeks, and the pain settled. Then you laced up again, and within a run or two it was back.

A running injury not getting better despite rest is one of the most common reasons runners come to see us. You’re not unlucky, and you probably haven’t done anything wrong. Rest is good at calming an irritated tissue down. What it doesn’t do is rebuild the strength and load tolerance your body needs to cope with running again. Recovery usually needs three things rest can’t provide: the right amount of load, a clear understanding of what caused the injury, and a staged plan for return to running.

This guide explains why complete or extended rest is usually not the answer for managing injuries. We will use running examples throughout, but its important to remember that the same principles apply to most sports injuries, whether you’re playing football, lifting weights or swimming laps.

Reviewed by Chris Jackson — APA Titled Musculoskeletal Physiotherapist & Running Physio, Founding Director of Central Performance, Surry Hills · Updated October 2026

Why rest calms pain but doesn’t rebuild capacity

When a tissue is irritated or injured, the body begins a healing process of inflammation, repair and remodelling. Backing off the activity that provoked it reduces irritation, so pain often eases. That’s useful. But pain settling and capacity returning are two different things.

Weeks of unloading can actually reduce muscle strength, tendon resilience and tolerance to impact. Take Achilles tendinopathy, one of the most common running injuries we see. Three weeks off running and the morning stiffness often fades. But when you run, your calf and Achilles handle forces of several times your bodyweight with every stride. If the tendon hasn’t been progressively loaded during those three weeks, it returns to running no stronger than when it flared, and often weaker because you have given it complete rest. The first 10 km back asks more than it can tolerate, and the pain returns.

That’s the cycle many runners get stuck in: rest, return, flare, rest again.

The goal of rehabilitation isn’t just to let symptoms settle. It’s to build your tissue capacity so that it is more than strong enough to handle the load of running and sport.

Your tissues adapt to load, not to rest – Load Management Is Essential

Bone, tendon and muscle all respond to mechanical load. Loaded appropriately, they adapt: muscles get stronger, tendons become more resilient and bone remodels to handle impact. Left unloaded for long periods, they gradually decondition. Loaded too much, too soon, they become irritated again.

Structured rehabilitation is about load management. This means finding the right dose: enough to stimulate adaptation, without exceeding what the injured tissue can currently tolerate. For a runner, that might include:

• Isometric holds and heavy, slow strength work, such as calf raises, split squats and hip and glute strengthening
• Single-leg strength, balance and control
• Hopping and plyometric drills to restore spring and impact tolerance
• A graded walk–run program, then building volume before adding speed and hills

Your physio adjusts this to the injury, how irritable it is and the stage of recovery.

One important exception: not every injury should be loaded straight away. Bone stress injuries, common in runners as shin, foot or hip pain, often need a period of protected or reduced loading first. Warning signs include very localised bony tenderness, pain that builds with each run, and pain when walking or at night. If that sounds familiar, stop running and get it assessed rather than trying to run through it.

Pain-free isn’t the same as ready to run

One of the most common misconceptions in injury recovery is that if it no longer hurts, it has healed.

Pain is a useful signal, but it isn’t a measure of strength, tissue capacity or readiness. You can walk around the office comfortably and still lack the strength, power and endurance running requires.

The numbers explain why. Each running step loads your leg at roughly two to three times your bodyweight, and an easy 5 km run is usually around 4,500 to 5,500 steps. Walking simply doesn’t prepare a tissue for that.

That’s why we use clear criteria to guide returning to run or other sports, not just the absence of pain. Depending on the injury, that might include comparing calf and quadriceps strength between legs, single-leg balance and squat control, and pain-free hopping before progressing to a walk–run plan. At Central Performance we can also measure strength and jump differences between legs objectively using VALD force testing.

Some movement is usually better than none

When something hurts, it’s natural to protect it. In the early days, modifying aggravating activities is sensible. But avoiding movement for weeks without a clear reason can lead to lost strength, fitness and confidence, and for some people a growing worry about running at all.

For many running injuries, staying active within limits works better than complete rest. A widely used approach is pain monitoring. In one well-known study of Achilles tendinopathy, people who kept running and exercising within an acceptable level of pain did as well as those who stopped painful activity altogether (Silbernagel et al., 2007). As a general guide, many physios look for:

• Discomfort during activity that stays mild (often no more than 3 out of 10)
• Symptoms that settle within a few hours afterwards
• No increase in pain the next morning
• No upward trend from week to week

This isn’t a licence to push through any pain. Bone stress injuries, acute tears and sharp or worsening pain need a different approach, and the right limits depend on your specific injury. If you are unsure it’s best to check with your physio before continuing to load, run or return to sport.

Cross-training such as cycling, swimming or deep-water running is valuable for keeping your fitness, but it doesn’t load your legs the way running does. Your heart and lungs often recover faster than your tendons and bones, which is exactly why runners tend to feel ready before their legs are.

The cause of your injury may still be there

Most running injuries don’t happen at random. They usually come from a mismatch between what you asked your body to do and what it was prepared for. Common contributors include:

• Training load spikes: increasing kilometres, speed work or hills too quickly, especially during a race build-up
• Changes in shoes, surface or terrain
• Strength gaps, particularly in the calves, quads, hips and glutes
• Running technique factors, such as overstriding
• Inadequate recovery and sleep
• Under-fuelling: not eating enough to match training, which is linked to bone stress injuries (relative energy deficiency in sport, or RED-S)

Resting the sore spot may settle symptoms, but if the training error or strength gap is still there, you return to the same conditions that caused the injury. Research consistently identifies a previous injury as one of the strongest predictors of a future running injury, which is another reason to address the cause and not just the symptom.

A thorough assessment looks at the whole picture: training history, strength, running technique, recovery, and any relevant nutritional or medical factors. That’s where a running assessment, strength testing and running technique coaching can be very helpful additions to initial running physio management.

A good rehab plan takes you all the way back to running

Rehabilitation isn’t just about healing the sore spot. It’s about restoring the capacity to handle everything you’ll ask of your body: daily life, work, training and racing.

At Central Performance we think of this in three stages, our Relieve → Restore → Elevate pathway:

• Relieve: settle pain and irritability, understand what’s driving it, and modify training rather than stopping everything.
• Restore: rebuild strength, load tolerance and running-specific capacity, then return to running with a structured progression.
• Elevate: keep building beyond where you were, with strength and conditioning for runners, technique coaching and lactate threshold testing to train in the right zones, so you’re more resilient than before the injury.

Many runners stop at Restore because the pain has gone. However, the final stage – the Elevate stage – is where you can really increase your running capacity and performance while still minimising the chance of the injury coming back.

Not a runner? The same principles apply to most injuries

We’ve used running examples in this blog, but these principles aren’t unique to runners. Rest settles symptoms, progressive loading rebuilds capacity, and causes that aren’t addressed lead to recurrence, whatever your sport or job.

• Football, rugby and sprinting (hamstring strains): they often feel fine within a couple of weeks, but returning before strength and sprint speed are rebuilt is a common cause of re-injury.
• Netball, basketball and touch footy (ankle sprains): a sprained ankle that’s simply rested often becomes pain-free fairly easily, but it loses strength and balance, and repeat sprains are common.
• ACL injuries: return to sport is guided by strength and hop testing, not time alone. See our ACL & Knee Rehab Program.
• Tennis, golf and climbing (elbow tendon pain): like the Achilles, these tendons respond to progressive loading rather than prolonged rest.
• Gym, swimming and overhead sports (shoulder pain): rebuilding shoulder strength and control through range matters more than avoiding the movement.
• Desk workers (back and neck pain): for the vast majority of back and neck pain the evidence is very clear – staying active within symptom tolerance and then and gradually rebuilding strength is far superior compared to avoiding all activity.

Whether you’re training for a marathon, getting back to Saturday sport or just want to get through a workday without pain, the question is the same: has your body regained the capacity for what you’re asking it to do?

Running injury not getting better? Signs it needs a plan, not more rest

• You’ve rested for a week or two and it isn’t steadily improving
• It flares every time you start building back up
• The pain gets worse with each run, or is there at night or at rest
• You’re changing how you run or walk to avoid it
• You’ve had the same injury before
• You have an event coming up and need a clear return plan

Related reading for how to manage running injuries

Running Injury Not Getting Better With Rest? Frequently Asked Questions

1. Why is my running injury not getting better with rest?

Rest reduces irritation, so pain often eases, but it doesn’t rebuild the strength and load tolerance running requires. Weeks off can even reduce a tissue’s load-bearing capacity, so when you return, the demand exceeds what it can handle and symptoms come back. Most running injuries need a progressive loading program and a look at what caused them, not ongoing rest.

2. Should I stop running completely if I’m injured?

Not always. Many running injuries, such as tendon pain and runner’s knee, can be managed by modifying rather than stopping running, for example by reducing distance, pace or hills to keep symptoms within acceptable limits. However, some injuries, particularly suspected bone stress injuries or acute tears, do need a break from running. A physio can tell you which applies to you.

3. How much pain is OK when running with an injury?

For many tendon and overuse injuries, physios use pain monitoring: mild discomfort (often no more than 3 out of 10) that settles within a few hours and isn’t worse the next morning is generally acceptable. Sharp pain, pain that builds as you run, pain that persists through the next day, or bony pain is not. Suspected bone stress injuries should not be run on through pain.

4. Why does my running injury keep coming back?

Usually because the tissue’s capacity hasn’t been fully rebuilt, the cause hasn’t been addressed (such as rapid increases in training, strength gaps or technique), or the return to running was too quick. A previous injury is one of the strongest predictors of a future one, so a structured return matters.

5. How long should I rest a running injury before seeing a physio?

If it isn’t steadily improving after about a week of modified training, keeps returning when you build up, or is severe, see a physio rather than waiting longer. Getting the right plan early usually means less time off running overall. Seek prompt assessment for suspected bone stress injuries, significant swelling or if you can’t put weight through the leg.

6. Will cross-training help my running injury heal?

Cycling, swimming and deep-water running maintain fitness and are a useful part of rehab, but they don’t load your legs the way running does. You’ll still need specific strength and impact work to rebuild capacity before returning to full training.

7. How do I know when I’m ready to return to running?

Being pain-free when walking isn’t enough. Physios typically look for criteria such as comfortable walking, good single-leg strength and control, similar strength between legs and pain-free hopping, then use a graded walk–run progression. The exact criteria depend on your injury.

8. Do these principles apply to other sports injuries?

Yes. Hamstring strains, ankle sprains, ACL injuries, tendon pain in the elbow or shoulder, and back pain all follow the same principles: rest settles symptoms, progressive loading rebuilds capacity, and addressing the cause reduces the chance of recurrence.

9. Do I need a referral to see a physio in Sydney?

No. You can book directly with a physiotherapist without a GP referral. Some funding arrangements, such as Medicare-subsidised care plans or workers compensation claims, have their own requirements, so check those before your first appointment.