2 hours and 15 minutes for the 15 or 16 miles up and 2 hours for the 12 or 13 miles back, plus a couple extra miles on either end before/after the bike path means about 30 miles of rollerblading today :)
According to three different calorie calculators, i burned either 1882 calories, 3468 calories, or 5101 calories =P I really doubt i burned the equivalent of over a pound and a half of fat, i'd like to believe that the 1882 value is plausible, but i'm somewhat doubtful about even that =P