Personally, I'd slate a half a day for Duluth itself, head down to canal park, do the touristy things and check out the shops such as duluth pack and similar ones. Maybe hop in on a tour of the glensheen mansion.
Then I'd clear on out of there and head north. There's more for me personally north of Duluth than there is in Duluth.
But, I completely defer to Tzone, he's actually from there.
