That is only about 0.8 miles long. Not anything for serious bikers/hikers. My husband is a runner and he finds routes all over the place, but none of them are seriously long. He usually repeats the route to get his miles in.
Bikes are really not supposed to be on the roadways at Disney because the traffic can get really bad.
Central Florida is pretty flat, so there really aren't any decent trails for any serious hikers. We did enjoy walking to, and then all around, Ft. Wilderness, from Wilderness Lodge. There are several miles of paths between the campsite areas.