We just completed this trip 2 weeks ago and it fabulous. There are some special treats so here they are.
The ride through Glen Canyon north of Mexican Hat, UT is great.
Bryce Canyon... Be sure to hike down the Queen's Garden Trail and back up the Navajo Trail past 2 bridges. It is more of a short walk than a hike and it will be a highlight of the trip.
Zion. Go a few miles west to the park entrance at Springdale to the town of Virgin. As you enter Virgin you will see a sign for the Kolob Reservoir. This is a 20 mile ride in and out of Zion NP through beautiful diverse scenery to the lake at about 8200' It is a 2-lane motorcycle road and... well, just do it!
SR 12 between Bryce Canyon and Torrey, UT is a great ride. The first 20 or so miles is ordinary but the ride across the Hoggs Back down into Boulder, UT is spectacular. From there to Torrey you climb to nearly 9500 feet withbeautiful views of Capital Reef off to the left.
An added benefit? It is all 2-lane road with little traffic. Enjoy
2004 Kawasaki 1600 Classic
2006 Kawasaki 900 Classic