I ran my last 20 mile run before the marathon I run in Illinois in two weeks. The original plan was to run the same 9.5 mile tempo that I ran a few weeks ago, but as I started I decided to run a 5.4 mile tempo (2 x sunset park loop), followed by a 5.7 mile tempo (1 x sunset park loop + 3 miles towards home). I ran 6.7 miles easy before starting the first tempo section at just faster than 6:40 pace, however around 5 or 6 miles my calf started complaining again (same calf as before, but the opposite side, so maybe the result of some overcompensating). So, after the first loop of the park (2.7 miles in 15:00/ 5:33 pace) I stopped the first tempo run. I ran easy for a little while, and stopped to massage my calf and stretch it out, and eventually started the second tempo run right when I had originally planned. The second tempo hurt more than the first, although the pain seemed to relax away to a certain degree near the end of the park loop. I finished the second 2.7 mile loop in 14:53 (5:30 pace). I stopped the second tempo at that point rather than risk any damage, but I ran 1 mile out of the last three miles of the planned tempo section in 5:23. I made it home to finish 20 miles in 2:10:28. Wind was not bad during the run, but it was swirling around everywhere, so I never really got a good tailwind to offset the headwind, which is why the tempos were so slow. A tornado cloud even formed in the middle of the park as I was running easy and I got pretty close to it, watched it for a minute or so, and then started running again. I went to the running store, and got new racing flats after I finished my run, so I added a little extra mileage. I will give myself an extra 0.5 miles for it | 