Per the website....at the very bottom
http://www.bluegrass.com/telluride/camping.htmlShuttle buses from Mary E and Lawson Hill win run from 7:30am - 3am on Wednesday thru Sunday, and from 7:30am - 2pm on Monday (closing day).
Although, I would consult your friendly shuttle driver as your mileage, and their taste in driving music, may vary.   

I wish I could remember the cool shuttle driver that was a Sinatra fan.
1st shuttle with Sinatra's greatest hits  

2nd shuttle with Sinatra's greatest hits   

3rd shuttle with Sinatra's greatest hits    

4th shuttle with Sinatra's greatest hits   

Just kidding, he was awesome.