20 miler number II

Did the usual out-and-back up to and along Forbidden Drive in the Wissahickon. I felt great until around Strawberry Mansion (on the return) and then I think I started to bonk, and hard. I muscled through to Lloyd Hall, then suffered through to South St. It kind of felt like the end of a marathon, even though it was only 20 miles. I think it was probably just the heat and lack of food (hungover yesterday = didn't have an appetite and didn't eat as much as I should have).