43 mph is my record. But I am a coward on descents. There is a local hill that I think I could hit about 45+ on with the right wind but I don't ride that one that often. I did Lizard Head Pass last year. I rode my brakes down the hill. Most of the people in the group hit well over 40 but I did not like the traffic and the potential of rocks and debris in the road. I talked to a local and he said he tried to get no higher than 40 mph on that hill - pretty much for the same reason. Having a wipe out at 40+ is not fun to contemplate much less actually have.