when i'm getting my exercise around the loop in the park, i see people on road bikes having conversations with each other blowing past me. seemingly with no effort. it's good exercise trying to keep up.
so how many miles would i have to do on my heavy entry level hybrid (trek 7300) to equal a road bike century? to those roadies who would answer 100, i challenge you to do it on my 30 pound bike (30 pounds with no accessories)
and remember how much more wind resistance there is on the upright hybrid, not to mention fatter tires blah blah blah.
without ever having been on a road bike, i'm gonna say 1 road bike mile = .7 clunky hybrid mile