Hi Don - I am a trail runner/backpacker turned mountain biker/wannabe bikepacker.  I have a weeklong group tour booked for the Yukon this summer for my 50th bday but will likely not be able to go with the shutdowns of travel.  I am now instead turning my sights to bikepacking in the case that I can pull that off instead.  I live in Fairfax, just north of SF, and am on my bike 3x/wk working on building my miles (20 miles on Mt Tam is where I am now).  Let me know if you are still thinking about doing BART!
Thank you!
Mel