It's a really nice, not to long "hike" that goes around the perimeter of the park - probably somewhere between a mile and a mile-and-a-half. The nice part is that it goes through trees and then across some more desert-like terrain, and goes up-and-down. Not a technical hike by any stretch, but a really nice one.
We saw bunnies and squirrels, lots of birds; and passed such exotic beasts as Golf Cart Americanus (there is a course on the other side of the trail/park at one point).
Mikey took off - he does stay "in sight." As we progressed he would yell out commands, "Forest!" and at forks in the road, "Right!" or "Left!" He even looked at the map - not sure if he "got" it or not but it sure looked like he did.
David worried a lot when Mikey got ahead; we tried to assure him that a) he didn't need to be responsible THIS time and b) it was all OK. He liked the hiking a lot too.
It was just about the right length, too; at the end, Mikey did not fuss and he did want to go back to the playground for a little while. All in all, a very good new adventure.