Justin,
This will vary greatly depending on the conditions and route. I was part of the 2013 crew and I believe my route was about 85 miles, mostly on trail. I finished at about 3pm on day three. How does that compare with "normal hiking?" Day 1 was a late start at about 7:00-730. But I went until dark both days and started in the dark the other two days so long days. this time of year on the PCT or AT this would easily translate into 40+ mile days so I took about a 25% decrease due to conditions. (My route below the Chinese Wall had a fair amount of snow.)
Dan,
I agree completely with not getting locked into the details of a route. I did this only to abandon it for three different routes. what changed was the level of the Flathead River with the water dropping from record levels to a more manageable level during the trip. This allowed the cooler route and the Flathead crossing much further downstream.
Last year I did the preliminary route planning, enough to know that it was a long route. As the snow levels increased I knew my window of opportunity was too short to commit to the trip.

