The transition from walk to run occurs at about 13 minutes per mile. A 10km run in 1:20 is about 12 minutes 52 seconds per mile, which is extremely slow. This b

The transition from walk to run occurs at about 13 minutes per mile. A 10km run in 1:20 is about 12 minutes 52 seconds per mile, which is extremely slow. This better be a recovery run or something, it’s barely enough to lift an average person out of a Zone 1 heart rate.