I'm 63 and now when i walk for a short distance the back of my right starts burning to the point i can hardly walk.what is this? carpenter about all my life now retirde

Right : Right leg burning when walking is called claudication. This can be from nerves (neurogenic claudication) or blood vessels (vascular claudication). You likely have tightness (stenosis) in your back pinching your sciatic nerve. I would recommend seeing your primary care doctor, interventional pain doctor or spine surgeon. Many people benefit from rest, physical therapy, anti-inflammatories, nerve medicine (such as neurontin), steroid injections and surgery. Please see my health guide on lumbar spinal stenosis and difficulty walking. Whats the connection? Good luck!