Coming back from a running injury is one of the most frustrating parts of being a runner. You feel better, you lace up, you get a few good miles in, and then the same pain shows up again. So you rest. Then you try again. And the cycle repeats.
The good news is that most of what goes wrong during a return to run is predictable, and it is fixable. On a recent episode of the Making Strides podcast, we sat down to demystify the whole process.
Here is who was in the room, because when it comes to return-to-run advice, the source matters:
- AJ Cohen, founder of Up and Running Physical Therapy in Fort Collins, Colorado, a clinic built specifically for runners, lifters, and active adults.
- Adam, a clinician on the Up and Running team who works with injured runners every week.
- Vikash, doctor of physical therapy, founder of Perfect Stride PT in New York City, and founder of Running for Life Education. He has worked with runners since 2012 and now trains other clinicians on how to manage them.
What follows is the distilled version of that conversation. Real cases, real disagreements, and a few frameworks you can actually use.
The Biggest Mistake Runners Make When Returning to Run
Ask a runner when they are ready to go back to full training, and most will tell you the moment their pain is gone. That instinct is exactly the problem.
As Vikash put it, the single biggest error runners make is the thought of, “Hey, my symptoms are resolved, therefore I am ready to get back to things at a hundred percent.” Pain leaving the building is not the same as the tissue being ready for load.
There is a saying we use here at Up and Running Physical Therapy that gets this across: “when the pain goes away, we are just getting started”. Here is a quick way to see why. Ask an injured runner if they were in pain right before they got hurt. The answer is almost always no. But something led to the injury. That means the things worth working on were there long before the pain was, and they are still there after the pain leaves.
The second big mistake is doing too much, too soon, and too complicated. As Adam described it, injured runners “get on YouTube or Google or whatever, and they’re trying to do a little bit of this, a little bit of that, and they’re never really sticking to a plan.” They bounce between programs, never give anything time to work, and burn out convinced nothing helps.
Keep it simple. Pick a plan. Give it real time, not a couple of days.
Validation discomfort: a better way to think about pain
One reframe that helps runners here is what AJ calls “validation discomfort.” When a rehab exercise or an easy run produces some discomfort, that is often a signal that you are loading the exact tissue that needs to get stronger. You are validating that you are stressing the right structure. That does not mean you push into anything. It means mild, tolerable discomfort is not automatically a red flag. It can be part of the work.
Why Complete Rest Often Backfires
The most common self-prescribed plan is also one of the most damaging: extended, total rest.
Here is the science of why that goes wrong. The body adapts to whatever you ask of it. When you stop running, your tissues do not stay frozen at your fittest level. They de-adapt. As Vikash said plainly, “The idea of detraining is a very real thing.”
So when a runner takes weeks off, then goes out for a three-mile test run, flares up, and concludes they need more rest, they are usually reading it wrong. Every rest cycle lowers the threshold a little more. Then they come back as a slightly less capable version of themselves and expect to run like the athlete they were before the injury. That gap is where re-injury lives.
The alternative is what Vikash calls strategic tissue loading. There is almost always something productive you can do:
- Find the relative baseline where symptoms stay acceptable, for example the point where pain shows up at mile two, and stay just under it.
- Supplement with cross-training to hold onto fitness.
- Work the rest of the system that is not injured, including power production, deceleration control, and capacity in nearby tissues.
The injury is often a small sliver of the picture. The rest of your body is a wide open opportunity.
One honest caveat from the conversation: this is soft tissue thinking. Bone stress injuries are their own category and require more caution and, often, more genuine offloading.
What Clinicians Get Wrong, Too
Runners are not the only ones who make mistakes. The therapists on the panel were candid about where the profession falls short.
The classic one, in Vikash’s words, is telling a runner, “You have pain, therefore you can’t run.” For plenty of stable presentations, like a well-behaved Achilles tendinopathy, that advice is simply wrong, and it pushes runners into unnecessary detraining.
Adam framed the clinician version of the problem as the mirror image of the runner version. Where runners chase a hundred fixes, clinicians often get “too tunnel vision” on one. “It’s the glutes, it’s the form, it’s the foot strike,” when the real picture is much bigger.
Running form gets an especially unfair share of the blame. So does giving up too early. There are far more levers to pull to keep someone running than most clinicians reach for: run-walk intervals, footwear and stack height, step rate, incline work, pacing. As AJ put it, the goal is fighting like hell to keep somebody running to some capacity, because once a runner gets pigeonholed into full rest, the entire return-to-run process gets harder.
Rapid-Fire Return to Run Questions, Answered
We ran through the questions patients ask most. Here are the short answers, with the reasoning behind them.
Is pain during running bad?
Not necessarily. For most runners at this stage, mild pain is a data point, not a stop sign. The rule of thumb from the panel: bone stress injuries aside, if it is mild, acceptable discomfort, and it is back to baseline the next day, you can usually green light it.
Is complete rest making some runners worse?
Often, yes. Most injuries need a short window of relative rest, a day or a few, sometimes a bit more. What tends to make runners worse is the open-ended “I am resting this until it feels better” plan. That is where detraining and tissue de-adaptation take over.
Do you always need a run/walk program?
No. Two things decide it: how long you have been away from running, and how irritable the tissue is right now. If you have only been off for a few days to a week and symptoms are calm, you can often be more aggressive. If you have been out for weeks to months, you will need to rebuild with structured run-walk intervals.
A useful expectation-setting reference from clinician Nathan Carlson: the length of your return to run often roughly mirrors how long you were dealing with the injury or out of running. It is not a law, but it helps set the mindset.
When do you add speed, hills, and intensity?
This is where a simple framework helps. It is the FDI principle: Frequency, Duration, Intensity, usually in that order.
- Rebuild frequency first. Get back to your target number of runs per week.
- Then build duration. Extend a couple of weekly runs and the long run.
- Then layer in intensity with strides and/or intervals.
On the panel, the benchmark for adding real intensity ranged from being able to hold roughly 30 minutes of easy continuous running on the aggressive end, to closer to 45 to 60 minute runs comfortably for a couple of weeks on the more conservative end. Higher fitness and a stable injury can move that up. A bone stress injury moves it back.
Hills and vertical are their own lever. They are not interchangeable with intensity. If uphill running feels good, for example with some knee pain presentations, you might introduce gentle rolling hills early to build resilience. If uphill loads the injured tissue hard, as with many Achilles cases, you save it for later. Even before formal speed work, you can sprinkle in strides, pickups, ramps, and short fartleks.
Acceptable vs Unacceptable Discomfort
Most clinicians managing soft tissue injuries lean on a pain-monitoring approach rooted in the work of researcher Karin Grävare Silbernagel. The insight is that numeric pain scales are unreliable between people, so instead you define what is acceptable to that specific runner and what is not.
If symptoms rise a little during a run but stay acceptable and return to baseline in a reasonable time, you are fine. But acceptable needs guardrails, because it is subjective. The panel’s practical checkpoints:
- The next-day test. A four out of ten that is still a four three days later is not acceptable, even if the number felt fine in the moment.
- Gait. If you are limping, even at a low pain level, that is a problem.
- Rest and sleep. Resting pain or symptoms that disrupt sleep are warning signs.
- The trend. Has the pain been improving over time, staying flat, or creeping up recently?
One more human factor: your relationship with pain. Fearful, movement-avoidant runners often need gentle encouragement to nudge in. Fearless ultra types who treat all pain as noise sometimes need to be reined in. Same principle, opposite coaching.
Return to Run Difficulty Tier List: Common Running Injuries Ranked
For fun, the panel ranked common running injuries by how hard they are to return from, factoring in how long they take, how often they flare, and how much they disrupt training. S means easiest to come back from. D means toughest.
|
Tier |
Injury |
Why it landed here |
|---|---|---|
|
S |
Calf strain |
Recurring calf strains frustrate runners, but the fix is usually something simple being done wrong repeatedly. Correct that and most people get on the right path for good. |
|
A |
Bone stress injury, low-risk site |
The rehab itself is the most straightforward on the board. The complexity is off the run: figuring out why it happened, and managing elevated future risk. |
|
A |
Achilles tendinopathy, midportion |
Loading is well understood, footwear and gait are modifiable, and runners can usually stay active throughout. |
|
B |
Patellofemoral pain, runner’s knee |
Enormous variability in presentation is what keeps it in the middle. Some resolve fast with early, straightforward rehab. Some linger for years. Research from Rich Willy suggests a majority of people whose kneecap pain starts in adolescence carry symptoms into adulthood. |
|
B |
IT band syndrome |
Responds well to graded exposure and progressive overload, but it feels alarming early, and there is not much you can do to calm symptoms in the moment beyond load management and small training tweaks. |
|
B |
Medial tibial stress syndrome, shin splints |
Treatment is fairly predictable as you offload, but it can take a long time, and threading the needle between offloading enough to heal and running enough to stay a runner is a genuine dance. |
|
C |
Plantar fasciitis |
Notorious for sticking around, partly because so many runners chase everything except what actually moves the needle. A subset simply resolves on its own timeline. |
|
C |
Achilles tendinopathy, insertional |
Tougher than midportion because compressive forces at the insertion make it easy to keep irritated, especially early on. |
|
D |
Proximal hamstring tendinopathy |
The most stubborn on the list. That low-level ache at the sit bone can hang around for months. Worth setting expectations up front so progress feels like a pleasant surprise. |
The One Thing Every Injured Runner Should Remember
We closed by asking each clinician for the single thing they would want an injured runner to hold onto.
Vikash reached for a market analogy. He tells runners their rehab looks like the long-term S&P 500 chart. Zoom out and it trends up. Zoom in and you will find the crashes and the ugly stretches where everything feels worse. Those dips are not failure. They are data points, and if you stick to the process, you keep climbing.
Adam’s version: this is gray-area work, not black and white. It is not a broken bone that a surgeon fixes and clears. It is trial and error. Some approaches work well, some do not, and your job is to find what sticks and double down on it.
And AJ’s, borrowing a line from Alex Hormozi: the long way is the shortcut because shortcuts do not ever get you there. Take responsibility for the injury, commit to the full process early, and aim past the version of you that got hurt toward a stronger one.
Frequently Asked Questions
How long does it take to return to running after an injury?
It depends on how long you were dealing with the injury and how irritable the tissue is. A helpful estimate is that your return often roughly mirrors how long you were out. A finicky Achilles that bothered you for three weeks returns faster than a bone stress injury that sidelined you for months.
Can I run with pain?
Often, yes, within limits. For many soft tissue injuries, mild pain that you can tolerate and that settles by the next day is acceptable. Bone stress injuries are the major exception and need more caution.
Is it bad to take time off running when injured?
A short window of relative rest is fine and sometimes necessary. Extended, open-ended total rest usually backfires, because your tissues detrain and you return less capable than before.
When should I add speed and hills back into training?
Follow the frequency, duration, intensity order. Rebuild your weekly run frequency first, then extend duration, then add intensity once you are comfortably handling continuous easy runs. Hills depend on your specific injury and can sometimes come in early.
Do I need a run/walk program to return to running?
Not always. If you have only been off briefly and symptoms are calm, you may be able to return closer to your prior running. Longer layoffs and more irritable tissue call for a structured, progressive run/walk approach.
This article is general education based on a clinical discussion on a podcast. It is not individual medical advice. If you are working through a running injury, a return to run plan should be tailored to you, ideally with a physical therapist who works with runners.
