No, and that may be because I've been comparing the Jamis to my other bikes with fatter tires. I've been a little amazed by how much I've enjoyed it... A friend of mine tried to steer me to a road bike because he said his wife got so tired riding her Trek hybrid and I thought about it and decided to look for an upright that handles like a road bike and after googling fast bikes and coming up with Jamis, I feel like the advertising was right. On the other hand, I don't notice that I'm going that fast (so maybe it isn't that light like you say) but I don't feel tired after riding 10 or so miles... and I feel it with my other bikes. I haven't had the time to go for a really long ride, but I bet it's going to be a good experience.