Lone Pine to Mammoth

There isn't much available. Did you check into the Inyo County transportation website? The Crest bus leaves Lone Pine at 2:50 PM Monday, Wednesday, and Friday, arriving in Mammoth 2 hours later. You would have to spend the night in Mammoth to catch YARTS.
http://www.inyocounty.us/transit/CRESTpage.htm

I face the same issue on Saturday 8/9, needing to be in Mammoth the next day. At this point my plan is to arrive at Whitney Portal early afternoon and accost every hiker coming off the trail to see if I can catch a ride headed North. If that doesn't pan out I'll drive up to Mammoth and leave my car there, then deal with getting back to it after my hike.

Jim
Long Beach

Thanks James from Long Beach,

I just took a look at the CREST link you had noted and that saves me a big headache getting to Lone Pine from Mammoth Lakes. Now I just got to get a ride up to Horseshoe Meadows on august 1st to do an end-around to catch the JMT and not have to deal with My Whitney.

Thanks for you information, Randy from Redondo Beach

I called up Crest today and the link you gave, Jim, is one year out of date. Crest is no longer under the County, it is independent now. Use this link and see current schedules.

http://www.estransit.org
(this is a shortcut url they've set up, the place the above gets you to is this):
http://easternsierratransitauthority.com/wb/

Note, that the bus that goes all the way from Mammoth to Lone Pine and back is only M,W,F but daily buses go to/from Lone Pine to Bishop and different buses to from Bishop to/from Mammoth.

people on the east side will pick you up.

i've never had to wait for more than like a 1/2 hour.

and you can usually get rides out of whitney portal too.