Sorry, I meant to specify MPH. I attached a couple of pics, one of the bike computer and one of the bike after a typical round trip commute (2 hours 23 minutes, 35 miles). The average speed really suffers due to the 35-40 minutes of climbing where I'm really crawling. Sadly, the Merckx got wiped out in early January (first commute of the year) when I was taken down by a Crown Victoria. My other commuter is a Poprad, with 32C tires (slicks) and fenders in the winter time. Either bike is capable of flying down that hill if I get a good acceleration and I really tuck in. I'm talking elbows in, hands on either side of the stem, and chin practically resting on the stem tucked in. It's a fun way to start the day, usually around 5:30-5:45am.
--Marcus