I walked from my home to Leonard Springs Nature Preserve, down to the wetlands and back up to the road, and then home. My time for those 5 miles was 1 hour 52 minutes, or just a sneeze better than 2.5 mph over the course. My left knee started to twinge as I started the last mile; probably should have worn my knee braces.
I need to hike regularly until I can knock out ten-milers without wearing myself out. Then, I'll need to strap the backpack on and start carrying some weight. The upshot is, I really need to do some significant walking every week. I could use a hiking buddy.