solo trips i generally look at around 3k of portages a day as a working ceiling, depends on the portages and the trip -- , one trip last summer i had a 5.5k day, on an 'unofficial' algonquin route -- that's part logging roads and part bush-whack...multiply these numbers by three, i double-carry most of the time when i'm alone...my gear is on the heavy-side -- i enjoy the portages, i enjoy the walk back, tho it's nice to burn thru them once and a while tandem...but hey, it's time spent in the woods...