Yesterday I had a best PG flight so far. As weather forecast was in favor of nice flight, so I decided with my friend to try first time ever XC from Marshall to Hangar 24. Unfortunately my buddy decided to stay around Marshall area. After bumpy start at Marshall, around 2:30 p.m. I was able to gain some altitude above Marshall and made decision to go for it. Never flew this way before (towards to Arrowhead peak), so it was exciting and scary in same time :-). I was able to continue all the way to Hangar 24. Few times I wasn't sure where to look for a new thermal but eventually got lucky enough to keep going.
Here is flight track.
Thanks Jerome all advise.