the elevation on the GPS is interesting - looks like you dropped down a cliff on the way out, and the cliff disappeared on the way home.
I didn't pay any attention to the elevation trace. The overall climb of 112 feet seems pretty accurate though. Where that "cliff" is was indeed a downhill but not nearly that extreme. Curious! I was following the elevation on the GPS watch while running, and didn't see anything like is shown in the trace, so it appears to be some sort of odd artifact of the AP elevation algorithm.