Chris Webster used to keep a link to all previous race results since 91 or 92. I don't know where to find them now.
22 minutes is fast, especially for a Diesel. However, I believe that Nelson Oldham, John Jaycox and others have broken the 20 minute barrier in past races paddling longer boats (Gorepedo, Wavehoppers, Augsbergs, etc)
The race starts at the gauge station and usually ends in the runout of Kirschbaum's. A couple races ended at Pumphouse. One year was when the Gore Race evolved into the "Gore Fest" under EnviroAction Sports direction and another was when it was over 1400cfs and started above Gore Rapid.
I miss the days when there were only two classes; raft and kayak.