Thats my heavy training load in the hills....sometimes I go even lighter.
I used to pack 80# around to train....and I now think its a bad idea. I'm a pretty big guy and have packed many heavy loads over the years...but i've come to realize it has a cumulative effect on your ankles,knees, hips and back.
I feel like I get the same effective training with 40#....and its less wear and tear. Shattered my ankle while training with an 80# pack back about 8 yrs ago...PITA coming off the mtn with my foot just dangling....The next year I pack meat loads just fine with the lighter regimen......I only pack the heavy loads when i need to now.