Originally Posted by Jimmy C

knee pain. Is this familiar sounding to anyone??

I have a sharp pain that develops after about 15 miles on my bike or after 3 miles if i'm running. It occurs in both knees every time without fail. The pain is behind my knees on the outer-sides. I don't think it's related to my seating position since the pain also occurs in both legs when running. I should also mention that it never occurs on the trails when i'm mountain biking, but rather on the road. My guess is that i'm not pedaling continuously on the trails whereas I am on the road. It's so unbelievably discouraging to experience when I have so much energy left when this occurs. I'm 38yrs old and in good shape. Am I overusing specific muscles back there like the ligaments or could this be something else?

I am grateful to anyone who can share any ideas.
Jimmy