Over the past 7 weeks of the plan, I've always measured my running activity using time. Starting on Wednesday I'm going to start measuring by distance AND time to make sure that I'm making progress in both areas. As I'm running for longer periods of time, I'm don't want to be slowing my pace.
Wednesday calls for 28 minutes/2.75 miles. I've got the run mapped already and it includes Enemy Hill. Should be a blast.