Driving from South Florida to Alaska: Not Possible

You cannot drive from South Florida to Alaska. No continuous road network connects the contiguous United States to Alaska through Canada without ferry or air travel. The Alaska Highway begins in Dawson Creek, British Columbia, but reaching it from Florida requires crossing thousands of miles of Canadian roads. Practical options are flying (5–7 hours from Miami to Anchorage) or shipping a vehicle via barge/ferry from Washington state.