Speed Work

The distance and time of a run, which I log for every run, does not always accurately reflect the run. Yesterday I ran 5 miles, but with varied effort: 1 mile moderate, 1/2 mile hard, 1/2 mile easy, 1/2 mile hard, 1/2 mile easy, 1/2 mile hard, 1/2 mile easy, 1 mile moderate. The total time was in my usual range for 5 miles, but the workout was very different from my 5 mile runs earlier in the week. I'd like to again better my time at the CVS 5K in September, and to do that I'll have to put in more speed work than I have in past years.