In reply to Pinged:
I'm 6' 7" with a 34-35" waist, 36" inseam. Plenty of people will recommend Haglofs or Arcteryx Long sizes but I have found these are still not long enough, especially if you want to wear them under a harness that will hoik them up. Mammut Castor pants were good but too hard to find and expensive.
Probably out of your price range, but the best I have found is full custom at:
https://secure.beyondclothing.com/customize/cold-fusion-shock-pant/
Good quality, limited colour range, but superb fit.