Rick,

F6Bster has outlined what are probably the three best area rides that are around the 300 mile mark that you are wanting. One other possibility for those wanting to do less riding would be a trip to Mesa Verde National Park, it is very easy to spend the best part of the day seeing Mesa Verde. I am also familiar with the area and I will be available to lead or help out as needed. The San Juan Skyway and The Silver Thread (Lake City) are the ones I would prefer but I am flexible.

See you in August
Az Wingrider