I'm in the 3s this year. Last year I was a 4 and the previous year I was a 5. Last year they separated out the 4s from the 5s but the previous year they were combined and this year they appear to be combined again.
... and they're split again already. At least as of yesterday. The race director is good about sending emails to keep us informed. I'm racing in the 4s instead of the 45s this year.
I do it as a four day, but I am driving over from the bay area and it's a bit longer drive. My wife to comes out and drive support for me and my teammates, so we make a vacation of it... drive through Yosemite and stop to look at the scenery, do tourist stuff. I hope tioga pass is open by next friday- it's closed due to a fire.