Aspen area riding

I’ll be in Aspen tomorrow through Saturday afternoon (then to Montrose for a couple days) then back in Aspen on Monday night (Memorial Day) for the rest of the week. I plan to ride a lot, castle creek rd, maroon creek rd., Independence Pass toward the end of the week. Anyone have suggestions on other “can’t miss” rides in the area?

Any group riding that goes on in the area? I was going to check out the Aspen Velo shop for group rides but I was concerned this flatlander wouldn’t be able to hang with the mountain goats at a local bike shop. Any tips/recommended routes would be greatly appreciated.

I plan to run and swim as well,of course.