I just googled around for the West Highland Walk.

OMG...OMG... that looks WONDERFUL. How much fun is THAT???? I'd take 10-11 days to do it and just cover 7-9 miles a day instead of 10-14. Since you can choose to stay at a Bed and Breakfast a couple of nights for a shower, and can probably even do some laundry along the way, this is a GREAT, easy jaunt.

This is something I could even interest my wife in doing...THANK YOU, THANK YOU for pointing me to this!