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)
--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.