Montrose, Colorado would be a great location. Surrounded by some of the best and diverse riding that you can find:
--Million Dollar Highway (US-550), or the whole San Juan Skyway includes Ouray, Red Mountain Pass, Silverton, Molas Pass, Coal Bank Pass, Durango, Delores, Rico, Telluride, and Dallas Divide. An awesome day of riding.
--Grand Mesa (highest flattop mesa in the world)
--Colorado National Monument (a nice loop is doing this and then over Grand Mesa back to Montrose)
--Black Canyon of the Gunnison, South Rim and North Rim (CO-92 along the north rim is one of the best rides)
--Unaweep-Tabeguache Scenic Byway (includes Gateway, Delores River Canyon, and Dallas Divide)
--and more.
Montrose is a nice town, good lodging, good food, and motorcycle friendly. Been going there many years on Valkyries and/or GoldWings. Some nice rides as you go to/from Montrose also. It is one of the best locations for riding the canyons and the mountains. And either weekend will provide for some grat fall colors at the higher elevations.
And here are links to a couple of videos I did many years ago. They will give you a good idea on the riding.
Million Dollar Highway:
https://youtu.be/FZGdDTIUvfQ
Unaweep-Tabeguache Byway:
https://youtu.be/WvipmB-v2YU
Black Canyon South Rim:
https://youtu.be/XgJC1gglSOQ