Yeah, that just about sums up todays run. I was stupid - it was too hot to even attempt speedwork but I did it anyway. I got through about 3 of the intervals and then stopped them and finished off the 7 miles at an easy pace. In retrospect, I probably should have even cut the run short it was so hot and humid because I really struggled with the heat through those last few miles where there is no shade.
Oh well - live and learn. Tomorrow is a rest day - 1 to 2 miles easy. We'll see about Wednesday. Someone at my office just told me the heat and humidity is supposed to last through most of the week so I might be doing my marathon pace run on a treadmill.