Neither the fastest known time, nor the first known time, since I know others have done this loop. I'm typically one of the slowest out there! Thought I would get a thread going anyway.
Starting at the Embudito trailhead, take the 365 to the Pino to the S. Crest Trail where you can then pick up the Embudito to head back to the parking lot, clockwise. 17.2 miles and 4105'. I finished in 5:57:30 today.
I got 5:02:48 (male). My GPS has it at 17.0mi instead of 17.2 and an elevation gain of 3,965' instead of 4105'. In any case, given my (relatively slow) speed, it should be an easy one to beat (if I don't get a proper attempt at it 1st)! www.strava.com/activities/624694682