There is a woman in CA with a YouTube Channel who carries about 40 lbs (including a bear can and SPOT) for 50 to 200+ miles and 2-3 weeks at a time and seems to enjoy it just fine. http://www.youtube.com/user/LandmarkAdventures/videos
I'd be crying after 10 mins carrying 39 lbs and crippled after a couple of hours. But we are all different. She's in her 30's and 5'8". Me, I'm in my 50's and might be 5'1.5" on a good day... in the morning.
Her Desolation Wilderness and Tahoe to Yosemite videos are entertaining. Her 2 person tent review totally reminds me of my sister as she describes what she needs/wants in a tent. Me... I carry a tarp with some bug net sewn on it.