After 1 1/2 mile warm-up, I ran 3 repeats of 1/2 mile, with 1/4 mile walk/jog in between.
The weather was chilly, there was a light rain / drizzle falling, and the pavement was wet. To top it off, I was running alone, which is always more of a mental challenge. So I'm pretty happy with the results.
Next week I plan to do 4 x 400, and the following week 3 x 300, leading up to the race.
With a 3/4 mile cool down, total mileage for the day was 4.