We would have to say that the snails crawled fastest on the tabletop surface although we dont have any evidence to back it up bacause our snail Gary is a complete FAILURE!!!! and of what he did move he seemed to move fastest on and easiest on the tabletop. Our inaccuracies were that our snail didnt move very well. our snail really liked the rice krispy cereal, that is what we used to try and motivate him. the surfaces that we tested on was the table top cardboard and paper towels.