Yes, it's the same system as the 2/5/10km eggs. If the Pokemon is in the 2km category, it's 1 candy per 2km walked.
Since I don't take mass transportation on a daily basis, it'll be a tough one to gather enough candies for a Charmander --> Charizard.
However, once winter rolls around, that'll change. Too cold and wet to scooter commute.