By the general low standards of results reporting in randonneur ultra distance rides, Granite Anvil 1200 is not too bad. At least all three year's results are available on the official web site. Still, it's difficult in all cases to easily attach the finishing times to a particular rider without putting a ruler on your computer screen. Other information about the riders limited, but there is (was) some in the rider registration info for all years which I've incorporated.
Undated September 2017.