I'd like to try GMR->GRR->Baldy Ski Lifts->GRR->East Fork->39->Crystal Lake->Angels Crest->East Fork->GMR.

Ride with GPS is giving ridiculous numbers for it, but I bet its near 113mi / 15,000 ft climbing. Would have plenty of water opportunities for self supported rides, and food at Baldy and Crystal lake. Could make for a nice self supported epic.

http://ridewithgps.com/routes/1187925
112.7 miles, +17974 feet