Easy, but hilly fartlek

I just had to run this without any specific reason. Run a little faster. I ran to Clarksville partly via the Columbia Triathlon's bike course. Course profile was fine for fartlek (incl. faster hills), but the enormous prevalence of cars was too much. I ran 6.2 miles (@6.05 pace) with 2.5 miles warmup/cool down. However, the week continues as an easy week since Boston was only 2 weeks ago.