Im fairly active with weight 3 times a week, rock climbing and mountain biking 1 day a week.

Ive started throwing in 5 hour/50 mile cross country runs on my bike on alternating Sundays (2 so far) instead of downhill and Im getting pain in my left knee towards the end of rides (3 hours+) which lasts for a couple of days after.  The pain is at the top of the knee cap as if its a rope going under the knee cap (tendon?).  Its not debilitating pain just sore but I dont want to push the weights on squats/leg presses at the gym while its sore which is not ideal.  Ive had a dig around the web and a lot of it seems to say its probably my riding position/seat height, etc.  The bit I dont get is my right leg is totally fine if it was the seat height...  I guess my legs might be different lengths or something but looking for ideas of what it may be.

Anyone had much knee pain from cycling that sounds like this?

Likely to go away as I get used to longer routes or is this most likely a poor bike setup for my body?

either got somthing floating around, or somthing crystalising that causing the sore.. Do you enjoy fine cheeses & port? it could be gout/pseudo-gout -D

it could be number of things

http://www.patient.co.uk/showdoc/27000672/

I hope for your sake its not getting towards that. Mine tore completely about 3 years ago, after a few months of very physical work.

After the operation I had to spend 4 months in a jointed cast, and another 3 months wearing a jointed support.

Still, this painkillers they give you are nice.

I hope not too mate! :O

I think Ill play with my saddle height a bit more and set it even higher.  Im just confused how my right knee is ok and my left knee hurts.  If I set my saddle higher Im assuming it may fix my left knee but hurt my right knee.  Ill keep playing with the height.  It recovered after 1 day this time so it seems to be getting a little better.  (Or more numb to the pain lol)

Id go with poor placement of the feet on the pedals.

I had similar problems when I first started using SPDs... locked my right foot in my case at a more heel-in angle than my left.

funny you should bump this - been doing leg weights tonight at the gym and the problems reappeared and not from cardio/cycling.

Its decidedly weaker and is actually quite painful when I press on it with my finger after heavy use (soft tissue I assume).  Ill see what the deal is with work and going private.  I dont know who were with (never really bothered to read the health package) but let me know how you get on with HCA.  Im going to give it another couple of weeks and see how it goes but guess I should know what I have to do in case it gets worse.  Hope you get it sorted fella.

Yeah it looks like as long as its not a pre-existing condition its unrestricted.  It seems itd have been a lot more complicated if it was an injury/illness I already had.

Would an XRay show anything useful?  Id have though an xray would pass straight through a raised tendon.  MRI sounds like a better tool for you.

MRI on NHS when I was effectively paralysed with a slipped disk + sciatica.... 6 month waiting list, and that was with "favours pulled" apparantly.