I parked at the 100th South trail head and went south. I didn't have a lot of energy, but with the help of one rest stop going out (at the 0.8 mile mark) and four rest stops coming back (at the 1.7 mile mark and 2.2 and later markers), I made it. The sky was clear and sunny, and the temperature was in the mid 40s (F). There were a few people on the path, but not as many as I usually see.
My wife drove her car to the parking lot so she could run errands afterwards, and she walked 2 miles.