There's one hill here that is very steep. It's 10 km from the bottom of the hill near the golf course to the top where the ski area parking lot is, and it's a 2500 ft climb (800 m+). It is unpaved and rough road, maintained by the military for 4 wheel drive vehicles. There is at least one bike race up this hill every year. I think the record is something like 36 minutes. That would be just a hair more than 10 mph, and that's for the all time record. If it were pavement, I suspect the record would be a lot faster because you will find, if you go fast, that if you are not careful, your back wheel will spin occasionally as you torque the cranks and propel yourself onward and upward. I think this is in the same category as the Tour climbs, but the condition of the road is rougher. I suppose if it became paved one day, it would then be too hazardous because of the additional traffic.