Went last summer. Left San Diego July 3, 2010 with two other bikers all riding solo. I was on a '09 Candy Red Concours14 (ABS), 2nd rider was on a HD RoadKing, and the 3rd rider was on an '03 BMW 1150 RT. Our interstate route was on 15 up to Idaho and we started taking secondary roads. We took 75 to 93 to Glacier National Park, stayed at the Blackfeet Reservation and crossed over the border at "Del Bonito" agricultural crossing. Went to Calgary to Banff, then to Jasper in Alberta. We to Alberta 40 (AKA Alaska scenic highway) until Dawson Creek for the start of the AlCan. From there to Delta Junction to Fairbanks. We had several days of rain and portion of the Alcan were under construction. The Connie performed well in gravel, loose sand, mud, wet road etc... only stopped during a heavy hail storm in Montana (I'm from SoCAl and we can't handle that stuff on the road). Thanks God I had a radiator guard, fender extender and a headlight guard on my bike. Both side cases were full plus a full 50 liter top case, and a drybag and other stuff tied to the passenger seat. Even loaded, bike rode well when I pushed it to 120+mph for a few miles in Montana. New PR2 were great in the twisties. We did 9000 miles in 25 days. We camped weather permitting, hotel when we needed a hot shower/meal. Met numerous bikers...all of them friendly. Met many Europeans on bikes and bicycle on the AlCan...
It was a memorable trip and I will ride it again with my son or drive there with the wife.