The entire Expedition Africa section of Brevard Zoo is quite good, ending in this enormous and rather fantastic giraffe feeding deck. I have fond memories from my 2012 visit to the facility, but a major flaw is that once at the giraffe deck everyone has to turn around and go back the exact same way! Is there any chance of a full loop being completed in the distant future?
Since your visit in 2012, the path has been extended out towards this overlook of lemur island, which was previously visible only from the kayak tour or train ride. The trail itself remains an out-and-back experience rather than a loop unlike many of the other trails at the zoo.