Previous to doing a 675ft climb over 3.5mi today (and then descending the hill), my top speed was 33mph. Today I hit an all new top speed of 40.8mph. What's your top speed? What kind of bike/tires/gearing/wheelset do you have that allowed you to hit your speed?
I have 38mm tires that will be replaced with 28mm tires on Tuesday. I have a cheap wheelset (no-name brand that came stock on my bike).