Pacific Coast Trail runs has gone out of business..see this posting on Scott Dunlap's blog
I greatly enjoyed running the Skyline-to-the-Sea 50k. The volunteers manning the aid stations and the course markings were perfect, as was the transport to the start. The finish line food was also really good.
But, I kind of suspected something was up even then as there were some problems: no finish time recorded for me for several days, no first-ultra coaster, no finishers medal (and none ever mailed although promised, etc)
I hope somebody takes over S2S and some of their other courses.