Chilkoot Trail National Historical Site
The park of which the Chilkoot Trail is a part.
Will get you from Whitehorse to Skagway and back.
Runs from Prince Rupert through the inside passage of southeast Alaska.
White Pass & Yukon Route Railway
Runs a special hikers service from Bennett to Skagway (a separate care for stinky hikers:) ) and also combined bus service to Whitehorse.
Flights from Juneau into Skagway as well as flightseeing tours of southeast Alaska.
A good gear swap as well...