Even though I'm running faster than before, I'm still slloooowwww. At the end of the run, I decided to do a few faster runs-- one minute at whatever pace felt speedier than my usual shuffling along. Apparently I averaged 5.5-6MPH or so for those. That won't win any races, but it does get my heart rate up pretty quickly.
Some day I might actually break the 12-minute mile. Perhaps. Maybe.
Maybe I'll alternate doing week 3+ at my slower pace with days of doing W1D1 at a faster pace. Hrmm.