Not as long as "Phoenix"! We're listening to Goblet on audiotape; there are 14 tapes. Phoenix had 17 tapes!
Yup, Phoenix took approximately 4 hours longer for us to read. I think. It's better than Goblet, IMO.
I guess we could get the audiobook for our reading but it's more fun for us to all take turns reading aloud. Plus we don't like Jim Dale's rendition.