We've been to Whitehorse three times, long haul even from SE Saskatchewan, but well worth it. The first year was 2013. We had a 1997 GMC Suburban 4x4 1500 gas and pulled a Jayco 197 slider. Boosted the oil economy a bit. When we were at Whitehorse we did consider just taking the truck over to the nearest town in Alaska, but backed out. I had been using the old Sub when on gopher shoots, and there were spent .22 casings inside the cab. I'm sure if the border people would have found that I would have been labeled a terrorists. I figured to heck with that, I'll spend my money in my own country.
We've been to Yellowknife three times as well, also a nice trip.