Quick answer: Many people with mild to moderate arthritis can keep running, or start running gradually, if their joints tolerate it. Recreational running has not been shown to cause knee osteoarthritis. The keys are building up slowly, using run-walk intervals, strengthening your legs, choosing softer surfaces and good shoes, and backing off if pain or swelling lasts beyond 24 hours. Get individual advice if you have inflammatory arthritis or a joint replacement.
Does running cause arthritis?
It is a common belief that running wears out knees and hips. Research in recreational runners has not supported this. Running at a recreational level does not appear to cause knee osteoarthritis, and some studies suggest recreational runners may have healthier joints than people who are inactive. The picture may differ for people with previous serious knee injuries, very high training loads or certain joint shapes.
If you already have arthritis, the question is how your joints respond to running. That varies a lot between people, which is why a gradual, responsive approach matters.
Who can run with arthritis?
- Osteoarthritis of the knee or hip: many people with mild to moderate osteoarthritis continue to run comfortably with sensible adjustments. People with more advanced joint changes may find running aggravates symptoms and prefer lower-impact options.
- Inflammatory arthritis: when your condition is well controlled, running may be fine. During a flare, rest inflamed joints and switch to gentler activity. Discuss your plans with your rheumatology team.
- Joint replacement: surgeons often advise against regular high-impact running after hip or knee replacement, although advice varies. Always ask your surgical team before running on a replaced joint.
Your symptoms are a better guide than your X-ray. Some people with marked changes on scans run happily, while others with mild changes find it painful.
Starting or returning to running
If you are new to running or returning after a break, a run-walk approach is ideal. Programmes such as the NHS Couch to 5K app alternate short running spells with walking and build up over several weeks. With arthritis, you may want to go more slowly, for example repeating a week before moving on.
- Make sure you can walk briskly for 30 minutes comfortably before starting to run. See our walking guide.
- Run on alternate days to give joints time to recover.
- Increase only one thing at a time: how often, how long or how fast.
- Keep your pace easy. You should be able to talk in short sentences.
Using the 24-hour rule
Use pain as a guide rather than something to fear or ignore:
- Mild discomfort during a run that settles within 24 hours is usually acceptable.
- If pain is worse the next morning, the joint is more swollen or stiffer than usual, reduce the next run or take an extra rest day.
- Stop and seek advice if you have sharp pain, the joint gives way, locks, or swells quickly.
Adjusting your technique and kit
- Shorter strides: taking slightly quicker, shorter steps can reduce load on the knees and hips.
- Surfaces: grass, trails, tracks and treadmills are often kinder than pavements and steep cambers. Avoid long, steep downhills at first.
- Shoes: choose comfortable, well-cushioned running shoes and replace them when they wear out. A specialist running shop can help, but comfort is the best guide.
- Warm up and cool down: start with brisk walking and gentle mobility, and finish with a slow walk.
Strength training: the secret weapon
Strong thigh, hip and calf muscles help absorb the forces of running and protect joints. Aim for strength exercises two or three times a week, such as squats to a chair, lunges, step-ups, bridges, heel raises and single-leg balance work. See our resistance training guide and knee exercises. A physiotherapist can tailor a programme to you.
Training for an event
Signing up for a 5K, 10K or charity run can be a great motivator. Give yourself plenty of time to train, often longer than standard plans suggest. Build in easy weeks, practise at the pace you plan to race, and be ready to run-walk the event if needed. Crossing the finish line with comfortable joints is more important than a fast time. Many parkrun events welcome walkers as well as runners.
Mixing it up
Combining running with low-impact activities, such as cycling, swimming or cross-trainer sessions, lets you maintain fitness while giving your joints variety. If running becomes too painful, these are excellent alternatives, and so is brisk or Nordic walking.
When to get advice
See a physiotherapist or your GP if pain is persistent or worsening, if a joint keeps swelling after runs, or if you are unsure whether running is right for you. Many areas allow self-referral to NHS physiotherapy. Seek urgent help if a joint becomes hot, red and swollen with a fever, or if you have chest pain, fainting or unusual breathlessness while running.
A sample first month
This is an example of a gentle run-walk start. Repeat any week that feels hard, and only move on when your joints settle within 24 hours.
- Week 1: three sessions of a five-minute brisk walk, then alternate one minute of easy jogging with two minutes of walking, six times.
- Week 2: as week 1, but jog for 90 seconds and walk for two minutes.
- Week 3: jog for two minutes and walk for two minutes, five or six times.
- Week 4: jog for three minutes and walk for two minutes, four or five times.
Finish every session with a few minutes of walking. On the days in between, do your strength exercises or a gentle walk, swim or cycle. If a week goes badly, drop back a step. That is normal, not failure.
Frequently asked questions
Does running make knee arthritis worse?
Not necessarily. Many people with mild to moderate knee osteoarthritis run comfortably with gradual training and strength work. Use the 24-hour rule to judge how your knee responds.
Can I run with hip arthritis?
Some people can, particularly with mild symptoms. Shorter strides, softer surfaces and strength training help. Seek advice if running increases pain over time.
Can I run after a knee or hip replacement?
Surgeons often advise against regular high-impact running after joint replacement. Ask your surgical team for personal advice.
Is Couch to 5K suitable if I have arthritis?
It can be, especially if you go at your own pace and repeat weeks when needed. Make sure you can walk briskly for 30 minutes first.
Should I run during a rheumatoid arthritis flare?
It is usually best to rest inflamed joints during a flare and switch to gentle activity, then build back up gradually as the flare settles.
Sources and further reading
This guide is for general education and is not a substitute for personal medical advice. Everyone's situation is different, so always follow the advice of your own GP, pharmacist or rheumatology team. If you feel very unwell, call 999 or go to A&E. For urgent advice, contact NHS 111.