I did the 67-mile ride, and the big Eola Hill torture-fest is part of the 100 (near the end of the 32-mile loop that hooks back up with the 67).
Still, there are some hills on North Valley and Laughlin roads that were pretty hairy. I took my time, relaxed, paced myself... and had no problems. Even that bad steep mother quarter-mile before the turn onto Chehalem wasn't too bad.
I like going downhill, but you gotta go up first.
Now, my boyfriend did the 100; he's part mountain goat, so he flew up Eola Hill and came into the rest area we were meeting at with a huge grin on his face.
Sorry, Haggis, for the threadjack!!