Marathon: T- minus 35 days. Today’s scheduled run: 22 miles. Mile 1: Hey, I feel pretty good! The weather is nice. Gonna be a good run! Mile 2: Yep. Still feeling good. Whoa! I gotta slow down…not gonna last at this pace. This is a long run! Mile 3: Maybe I can even ditch the gloves. Knee still feels fine. Winning. Mile 4: Hmm…just a little touch of pain in the knee. Not bad. Just stiff. I’m sure it’ll feel totally fine in a few...