How fast can an alligator run?
We know of no one who has measured the ground speed of alligators. Actually, there is little reason, in regards to population management and basic knowledge of alligators, to research this topic. Alligators are aquatic animals; they hunt and capture prey that is in or immediately adjacent to water. Alligators and other crocodilians will go on land to feed on dead animal carcasses, and they may attempt to prey upon confined or tethered animals. Although alligators are capable of running, they use this gait to flee threatening situations. There is no documented evidence of alligators running after human beings to prey upon them.
Also, there is no basis to the myth that you should run in zig-zag patterns to avoid a charging alligator. If you do find yourself in the extremely unlikely position of avoiding a lunging alligator, you should run in a straight line away from the alligator and it's habitat, which is where the alligator will most likely retreat to. Regardless of how fast alligators can run, you should never approach an alligator that is on land.