I have an older heavier MTB which I haven't ridden in 2 years. I was going to use it on a group ride today, but the ride was postponed. I used to use it for a commute to a job, about 1 mile each way, and it wasn't bad on the short runs and that was carrying a backpack loaded with rain gear and tools. I'll let you know after doing 20 miles on it how it feels. Road bikes are so much easier. FWIW the MTB is fitted with slicks so it's not so bad for city riding.