Well, I do feel a bit better this morning, but I can tell I definitely need a rest day. After spending several days out of town, not sleeping especially well and running a hilly course 3 times in 4 days, my body is sending me a message. After dinner last night, I laid on the couch to read and rest and quickly fell into a deep sleep. I ended up going to bed at 9pm. My throat isn't sore like it was last night, so I'm hoping it was just fatigue and not a cold. That soreness in my tendon behind my left knee is still there, so there's another reason to rest. Like I hinted at a few posts ago, the boost in running mileage after doing more cycling than running might take a more gradual effort on my part, given the injuries I've dealt with in the past.
If I feel up to it tomorrow, I'll do some sort of tempo/speed/fartlek workout, then maybe take Friday off, then do my long run on Saturday.