Calf muscle pain: common causes, what helps and when to worry
Pulled calf, cramp, tight calves after running or pain when you walk? A Liverpool physio team explains the usual causes of calf muscle pain, how to help a calf strain heal, and the warning signs of a blood clot.
Most calf muscle pain comes from a cramp, a calf strain (a pulled calf muscle) or a muscle that has been overloaded, often by running. These usually settle with sensible self-care and a gradual return to activity. The one cause you should never ignore is a blood clot in a deep vein (DVT), which can cause pain and swelling in one calf and needs urgent medical help.
This guide covers the common causes, how to tell them apart, what helps a calf strain heal, and the signs that mean you should get checked straight away rather than wait.
What causes calf muscle pain?
The calf is made up of two main muscles: the gastrocnemius, the bulky muscle you can see, and the soleus, which sits deeper and lower down. Both join the Achilles tendon. Pain in the calf can come from the muscles themselves, the tendon, or something else entirely such as the blood vessels. The table below sets out the common patterns.
| Cause | What it often feels like | What to do |
|---|---|---|
| Cramp | The muscle suddenly goes tight and painful, often at night, lasting seconds up to 10 minutes | Stretch the calf; see a GP if cramps are frequent or last longer than 10 minutes |
| Calf strain (pulled calf) | Sudden pain during activity, then pain on walking or rising onto your toes, sometimes with swelling or bruising | Self-care, then gradual loading; get assessed if it is not improving |
| Soleus strain or overload | Tightness or cramping that creeps on during a run and does not settle | Reduce running and get it assessed if it keeps coming back |
| Achilles problem | Pain and stiffness lower down, at the back of the heel, often worse first thing | See our Achilles guide; A&E if you feel a sudden kick or cannot push off |
| Deep vein thrombosis (DVT) | Throbbing pain and swelling in one leg, with red or darkened skin | Urgent GP appointment or NHS 111; 999 if breathless or chest pain |
| Peripheral arterial disease | Calf pain when walking that goes away after a few minutes' rest | See your GP |
Cramps usually affect the calf and can happen for no obvious reason, or alongside exercise, pregnancy or some medicines such as statins (nidirect, 2025). If your pain is mainly at the back of the heel rather than in the muscle, our Achilles guide is a better place to start.
When to get checked urgently
A DVT is a blood clot in a deep vein, usually in the leg. Ask for an urgent GP appointment or contact NHS 111 if you have (NHS, 2026a):
- Throbbing pain in one leg, usually in the calf or thigh
- Swelling in one leg
- Red, blue or darkened skin around the painful area
- Swollen veins
A calf that becomes very red, tender and hot, or hard and swollen, also needs urgent medical attention (Northern Care Alliance NHS Foundation Trust, 2025). A DVT is more likely after surgery or a hospital stay, being in bed for 3 days or more, a journey of over 4 hours by plane, car or train, during pregnancy or soon after giving birth, and in people who have had a clot before, though it can happen with no obvious cause (NHS, 2026a).
Call 999 or go to A&E if you have these symptoms together with chest pain or shortness of breath, as this can mean a clot has travelled to the lungs. Do not drive yourself (NHS, 2026a).
Go to A&E too if you suddenly feel as if you have been kicked in the back of the calf and cannot push off the foot, as this can be an Achilles rupture (Nottinghamshire Integrated Care System, n.d.).
Calf strain or pulled calf muscle: what it feels like
A calf strain happens when the muscle is overstretched or has too much force put through it. Small fibres tear and bleed, which causes pain, swelling and sometimes bruising, and it can be hard to rise onto your toes or push off when you walk (Northern Care Alliance NHS Foundation Trust, 2025).
In a study of 20 expert sports clinicians, strains of the gastrocnemius were usually obvious straight away, often during sprinting, jumping or accelerating. Soleus strains were more often linked to steady running or came on gradually, with vague tightness or cramping that did not go away (Green et al., 2022).
The two strongest risk factors for a calf strain are getting older and having had one before. A review of 10 studies covering 5,397 athletes found no clear link with height, weight, sex or which leg is dominant, although the authors noted the overall evidence is limited (Green and Pizzari, 2017).
Calf pain after running and tight calves
Running is hard work for the calves. The experts in the same study described it as essentially hopping from one leg to the other, and said how often someone runs was a common reason calves broke down (Green et al., 2022).
Normal post-run tightness eases over a day or two. Tightness that comes on part way through a run, makes you pull up, or returns every time you go back out is worth getting looked at, as it can be an early soleus strain rather than simple stiffness (Green et al., 2022). Going back to running too soon was seen by these experts as a leading cause of a calf strain coming back early.
Our back to running guide covers how we build runs back up after an injury.
Calf pain when walking
After a calf strain, walking often hurts at first, especially pushing off. That should ease week by week.
A different pattern is pain in the calves that comes on when you walk and goes away when you stop and rest for a few minutes. This is called intermittent claudication and is the main symptom of peripheral arterial disease, where narrowed arteries reduce blood flow to the legs. It often affects both legs, though one can be worse. See your GP if this sounds familiar, or if you have constant leg pain that is worse at night, numbness, or sores on the legs or feet that don't heal (NHS, 2026b).
What helps a calf strain heal?
The first 2 to 3 days
For the first 2 to 3 days, the NHS advises protecting the injury, resting it, using ice for up to 20 minutes every 2 to 3 hours, and keeping it raised. Avoid heat, alcohol and massage for the first couple of days, as they can add to the swelling, and speak to a pharmacist about painkillers (NHS, 2024). So save the sports massage for later in your recovery, not the day you pull your calf.
Gentle movement, then loading
Walk less for the first few days, using a normal heel to toe pattern, and avoid running and jumping until walking is pain free. Gentle ankle movements and a wall calf stretch can start early, and heel raises behind a chair once you can rise onto your toes without pain, building up gradually (Northern Care Alliance NHS Foundation Trust, 2025).
The expert clinicians favoured getting people doing single leg heel raises early, with short, pain free loading sessions several times a day. Before a return to sport, many used a benchmark of at least 30 single leg calf raises, with no more than a 10% difference between legs (Green et al., 2022).
How long does a calf strain take?
Muscle healing takes about 6 weeks, although this varies with the person and how bad the strain is (Northern Care Alliance NHS Foundation Trust, 2025). Most sprains and strains improve after about 2 weeks, but the NHS suggests avoiding strenuous exercise such as running for up to 8 weeks to reduce the risk of injuring it again, and severe strains can take months (NHS, 2024).
When to see a physio
Get it assessed if the pain is not improving with self-care, you cannot walk normally after a few days, the strain keeps coming back, or you have a race or season to get back for. A physio can confirm what has been injured and set out a loading plan for your calf. If the picture is unclear, a diagnostic ultrasound scan can help show the extent of a muscle injury. More on how we treat strains is on our muscle tears page.
Frequently asked questions
How do I know if my calf pain is a blood clot?
A blood clot (DVT) usually causes throbbing pain and swelling in one leg, often the calf, with red, blue or darkened skin and sometimes swollen veins. It is more likely after surgery, a hospital stay, being in bed for days or a journey over 4 hours. Ask for an urgent GP appointment or call NHS 111. If you also have chest pain or shortness of breath, call 999.
How long does a pulled calf muscle take to heal?
Muscle healing takes about 6 weeks, but this varies with the person and how bad the strain is. Many strains feel much better after about 2 weeks, yet the NHS suggests avoiding running and other strenuous exercise for up to 8 weeks to lower the risk of injuring it again. A severe strain can take several months to recover fully.
Can I walk on a calf strain?
Usually yes, but walk less for the first few days and try to keep a normal heel to toe pattern rather than limping on your toes. Avoid running and jumping until walking is pain free. If you cannot put weight on the leg, cannot walk more than a few steps, or the pain and swelling are getting worse, get it checked through NHS 111 or an urgent treatment centre.
Why do my calves hurt after running?
Running puts a lot of load through the calves, so some aching or tightness after a run is common, especially when you increase how far or how often you run. Normal tightness eases within a day or two. Tightness that comes on during a run, makes you stop, or returns every time you run can be an early soleus strain and is worth getting assessed before it gets worse.
Should I massage or stretch a strained calf?
Avoid massage, heat and alcohol for the first couple of days after a strain, as they can increase swelling. In that early phase, protect and rest the leg, use ice for up to 20 minutes every 2 to 3 hours and keep it raised. Gentle ankle movements and a calf stretch against a wall can start early, with heel raises added once rising onto your toes is pain free.
Calf pain treatment at The Treatment Table
We start by working out what is causing your calf pain, ruling out anything that needs a doctor first, then build a plan around you. For a calf strain that usually means a graded loading programme and a clear route back to walking, running or sport. A physio assessment is £45, and any further sessions are explained and priced before you book.
We see patients at our clinics in Seaforth (Fitness Connection, 83 Seaforth Road, L21 3TY) and Speke (Business First Centre, Goodlass Road, L24 9HJ). You don't need a GP referral. Book an assessment, call 0151 559 1107 or email info@thetreatmenttable.com.
References
Green, B. and Pizzari, T. (2017) 'Calf muscle strain injuries in sport: a systematic review of risk factors for injury', British Journal of Sports Medicine, 51(16), pp. 1189 to 1194. doi:10.1136/bjsports-2016-097177.
Green, B. et al. (2022) 'The assessment, management and prevention of calf muscle strain injuries: a qualitative study of the practices and perspectives of 20 expert sports clinicians', Sports Medicine - Open, 8, 10. doi:10.1186/s40798-021-00364-0.
NHS (2024) Sprains and strains. Available at: https://www.nhs.uk/conditions/sprains-and-strains/ (Accessed: 6 November 2026).
NHS (2026a) Deep vein thrombosis (DVT). Available at: https://www.nhs.uk/conditions/deep-vein-thrombosis-dvt/ (Accessed: 6 November 2026).
NHS (2026b) Peripheral arterial disease (PAD). Available at: https://www.nhs.uk/conditions/peripheral-arterial-disease-pad/ (Accessed: 6 November 2026).
nidirect (2025) Leg cramps. Available at: https://www.nidirect.gov.uk/conditions/leg-cramps (Accessed: 6 November 2026).
Northern Care Alliance NHS Foundation Trust (2025) Emergency and urgent care: calf strain advice. Available at: https://www.northerncarealliance.nhs.uk/patient-information/patient-leaflets/emergency-and-urgent-care-calf-strain-advice (Accessed: 6 November 2026).
Nottinghamshire Integrated Care System (n.d.) Achilles tendinopathy: information for patients. Available at: https://sfh-tr.nhs.uk/media/slzh2xyb/kmh_000689_msk_achilles-tendinopathy_leaflet-v4ea_a5_2020.pdf (Accessed: 6 November 2026).