If you want a very simple method to track and improve your running speed over your training period…

…then try the One Magic Mile approach, featured in this Runner’s World article. As Jeff Galloway shows:

Running a timed mile provides a reality check on your current goals, helps you determine a safe long-run pace, and gives you a tangible way to track your progress during the season.

Some runners enjoy complex training approaches. Me, I prefer simple ones. If you do too, then I recommend the One Magic Mile approach.