It took a good 2 miles before my left hamstring was loosened up enough so that it didn't hurt. That is the same time I took off my long sleeve warmup shirt and my warmup pants. I took a break at 4 miles to get some water and do more stretching. It was an out and back, so that was half way through the workout.
On the way back, I stopped at a Christmas tree lot to check on some trees. As soon as I got started back up, my left knee - patellar tendon - tweaked out. It was a sharp pain that made me take very short strides for a good half mile before resuming my normal form. Soon after that, my left calf started tightening up.
I was glad to finish 8 miles, but it was not a smooth comfortable run by any means. At least it logged.