I have what appears to maybe be a hamstring injury, although I m wondering if it s something more. I have had the injury for over 2 years. I am a female runner, 44 years old, 5 7 , 128 lbs. I m a slower runner, about a 9 minute mile for shorter runs, 9:30 for longer runs. Currently averaging less than 20 miles a week (used to be 40-50 before the pain got too bad), but biking about 75-100 since the pain is getting worse (I have absolutely no pain DURING biking, and there s always a reprieve from the pain for a few hours after). The pain (burning, aching, tightness) starts in the inner glute area, and travels down the back of both legs, but less than half way to the knee . It used to just be in my right leg, now left as well. Althought it s not normally a sharp pain, sometimes, if someone bumps into me, or one of the dogs runs into my legs, I do have sudden sharp pain. I have gone to a doctor, who x-rayed it, and he said I had some degeneration in the lower discs, and recommended I see a P.T. (little background - I was involved in a horseback riding accident 20 years ago and although the x-rays showed nothing, have always had lower back pain with some sciatica . Nothing horrible, but just about always present). I went to a PT for 4 months with absolutely no results. I started to see a chiropractor in May. The pain in my lower back is just about completely gone (I also do a lot of core work, and although I did that before, I think the addition of the chiro may have helped), but it has done absolutely nothing for the pain in my butt/legs and he suggested I go get an MRI . It is now at the point that I can barely run. As soon as I start, it almost feels like something s going to snap. I feel like if I could take a scissors and cut whatever it is that s bugging me back there, there d be instant relief. I ve been doing other lower impact exercises such as biking, swimming and the elliptical, and even stopped running altogether for 3 months earlier this year. I do yoga , Pilates , and other hamstring exercises that both the Pt and chiropractor suggested (that actually seems to make it worse.) Sitting also makes it worse. I travel for my job and sitting on planes for long periods of time make it difficult for me to get back up. My husband says to quit running. I tried that and it didn t help. Any ideas?