i doubt there is really anything above 15% on there; garmin has been known to be a little inaccurate in that regard...
in any case it is a tough climb and the first 1/2 mile is definitely much steeper than any part of thompson. i agree that its a good challenge. one of the first times i went up it i charged pretty hard through the first couple of turns and totally blew myself up - pacing is good!
