Could it be a return?

Sun, 6/25-Had a nice turnout today at the track; 20 of us! I had decided yesterday that I would do broken 400s: fast 250, rest 60 sec, then 150. Two sets, with 12-minute recovery! Several years ago I managed 33.xx, then 21.xx...for roughly a 55 sec 400. Today I was aiming for a more modest time: 36.xx for the 250m, plus 23.xx on the 150. I hit 36-low, then 24-low, followed by 36-low, then 23-low. 

Even though I had completed hat I set out to do, I tacked on additional effort. After about 10 min, I then hopped in a 300 with Daryl at an easy 56 seconds. Then, after about another five minutes, I joined Alison for a 300...in 50. 

My achilles was sore this morning, but a little massage with tiger balm made the difference! Could it be a return? 

 Sat, 6/24-Mile stretch, mile, stretch 

 Fri, 6/23-Ran to Vare, stretched, lifted, then ran back home