I have been to the Fargo street event and 25 years ago people would climb it on road bikes and touring bikes. Now people actually build funny bikes just for the event, like gearing waay lower than you would ever see on a mountain bike. Even saw some guys go up on a stand-up type of scooter.
Fastest guy the last time was a well trained junior racer on his road bike, he just went straight up like it was no big deal.