The current Directory hs 66 days 21 hours 47 minutes as the fastest time to do the 50 states.
This is a highpointing hobby, not a hiking hobby, so it counts to start on the summit for this type of record.
I've studied the logistics and I think I can shave off 8 minutes. I'd complete in 66 days 21 hours 39 minutes
According to the current Directory, the "Slowest" time to complete was unknown a the time of publication in June 2005. The new Directory will be distributed in June 2006 and I know it will have some entries. I don't keep much HPing stuff at my office so I don't recall what length of time qualifies as the slowest to do the 50. It's greater than 50 years. Watch for the new 2006 Directory for that and many other updated records...