I've done the Granby to Steamboat bit, and I did not come down the 14 miles into Steamboat at 40 mph - more like 30 mph. I was riding a mountain bike and it was my first experience with extended downhill like that (I had been riding only 3 months). Scary for me, easy for you. It was 84 miles from our Granby stop to the high school in Steamboat, with a very nasty last 4 miles of uphill to the high school when you thought you were done.
Congratulations on going so far so easily. Get some new sunglasses and keep on reporting.