We used Turquoise Tours for the shuttle from a park close to Taos. We rode the full SBT at 22 miles w 2k of climbing. I think they offer a shuttle to Garcia Park? Garcia Park is 13 miles from where you park with short climb to the good stuff. I thought the full SBT was harder than the Lost Lake trail at 13 miles and 2.5k of climbing, but I was cooked from riding park on our 1st day.
Posting for a friend
Cannondale Scalpel and Pivot Mach 5.5 stolen from the Domain area last night. I think the Pivot is 2019 model and the Scalpel is a couple years old. Thanks for keeping an eye out.