The official times have been posted at the St. Jude Marathon site. My official chip time was more than 14 minutes faster than what I originally thought (see: I really am a klutz with my fancy-smancy runner's watch). Somehow, instead of running the race in 4 hours and 18 minutes, I actually ran it in 4 hours and 4 minutes--coming in 617th place overall. So, it appears that my goal of attempting to qualify for the Boston Marathon in the next year or two is not as far out of reach as I had thought! That's good news indeed!