I’ve been several times to both.
I’d recommend Yukon over Alaska for most serious backcountry hikers:
A. Fly into Whitehorse, Yukon.
B. hike #1 – Chilkoot Trail (permit required)
C. hike #2 – Slim’s River (trip) or Cottonwood, Kluane National Park
D. hike #3 – Tombstone (besthike video)

That would be a fantastic 2wk hiking holiday with very little time lost to travel or logistics. Yukon is dryer than Alaska. Has a better infrastructure. … In fact, you might even be able to do this itinerary on public transport.
Best weeks would be August / mid-September.
Leave a comment if you can dream up an itinerary as good in Alaska.

