Today I finally saw someone about my knees and learned to no one's surprise that inadequate muscle means running stresses my knees and hips. Also, I have very bendy joints (this I knew) which I mention because the physician actually used the phrase "loosey-goosey," which cracked me up.
But I probably would have swum after work instead of jog if I had remembered my swimsuit. Instead I had sneakers. Goal: a 10K, so more than 6.24 miles at a time, with more incline than I have used previously. Frankly, the idea of running for more than an hour at a time sounds like the worst bore in the world, so I am looking at >10 mph for the whole 60 minutes. Shyeah.