Once you seen the scenery of the west coast and turned a corner or 2 through the mountains of Western Canada, perhaps a tour of the Mae Hong Song loop in northern Thailand will perk your interest. In just over 90 kms it has 1864 curves and switchbacks. Some of these curves are less than 25 meters apart.
For a biker holiday you will never forget, investigate Thailand. Not for the faint of heart, but worth the trip. Note, Thailand drives on left side of the highway, and winter temp is around 25 - 35 degrees C.