I ask because hiking MT. Si yesterday (busy trail near Seattle, 4 miles long one way, 3800 vf) I saw a lot of people who seemed to be training in a variety of ways.
Many people running up and down, many people lugging big 50 lbs looking backpacks (not camping, just carrying to carry), one woman with a big pack dragging a good-sized car tire behind. Maybe she was getting ready to summit one of the volcanos or something …
I had my dog, and he is a natural athlete, so I loaded him with 10 lbs so he gets used to hauling a load and gets the type of work out he can handle. I had 6 or 7 lbs in a daypack. We reached the top in 90 minutes, so brisk but not break-neck pace.
A woman with a big pack who I passed actually said something about if I want to be in shape the weight should all be on me. I smiled and ignored her (I am always about hiking my own hike!) but I think I disagree. For me carrying a load, on a steep trail anyway, is taxing. I'd much rather do unloaded or lightly-loaded hikes and a bit of running in town so I don't irritate my joints and tendons unnecessarily, then pack light enough that I don't need to do more than a few month of yoga in the winter to get my core strong enough to bear a pack without trouble. Come spring I do some shorter trips and adjust my "training" according to how I feel.
You? Does anyone train with a heavy load?

