15 +years ago, give or take, that gap was smaller, but still needed you to arrange for a trailer shuttle. A trip across Canada, has been done once that I'm aware of, again, likely about 10 to 15+ years ago by group of guys who rode from out west back to Quebec (I think it was that way). They had support from many clubs along the way, and maybe even Ski-Doo at the time.
Losing the trail out of White River north thru Caramat and up to Longlac is a good example of how tough it is to support\maintain trails in sparsely populated areas.
That part of the province is pretty "sparse".
(Our daughter just drove that way last Spring on her military posting to Alberta, even in the car (Toyota Corrolla) , she had to plan her fuel stops carefully.)