It was on a course at Mt. Tabor (extinct volcano!).
Mt. Tabor makes Portland one of only two cities in the continental U.S. to have an extinct volcano within its boundaries; the other city is Bend, Oregon. The volcanic features of Mt. Tabor became known in 1912, years after it became a public park. The volcanic cinders discovered in the park were later utilized in surfacing the park's roads.
I made a slideshow, but you'll see most of the soapbox on the second page of it...so keep going. We stayed for a couple hours and left when we started seeing the same cars, so we don't know who won. They ran several heats of 3 cars at a time. Keith took notes and is already brainstorming his entry for next year. He will consult his father-in-law over Labor Day weekend. Maybe come up with some schematics. This is not 'Nam, there are rules.
"Heads up, Godzilla!"
"I'm, like, by now you have to have seen The Matrix."
"Well, you know if we get hit, we get hit."
"Deploy the parachute!"