Radiating Gnome
Adventurer
I ran a campaign for my group that ran from 1 to 21 over the course of 4 years, playing one 5 hour session every other weekend. And I'm about to play the very last session of an Age of Worms campaign that has gone from 1 to 21 over about two years. In that campaign I gave up on a character that wasn't working for me, though, so I can't really claim to have played the whole way, but most of the players at the table have played the same character all the way through.
-rg
-rg