My fastest speed: 34.5 mph.
Berkeley has some nice winding hills to blaze down on...I just started biking seriously two months ago, and so I still can't bring myself to not brake every 3 seconds while going downhill. Something about being afraid that my tires will hit a pothole and I'll flip over my handlebars.
It could also be the fact that all of my hill runs have been at night! I need a good light!