Ambulation simulation systems, terrain simulation systems, treadmill systems, and related systems and methods

In various embodiments, a treadmill system may include one or more custom treadmill hardware devices and one or more accompanying pieces of software which may be configured to work in tandem to simulate one or more virtual terrains within a game on a physical treadmill. In particular embodiments, the system is configured to enable a user to control a direction of a virtual avatar as the avatar traverses the virtual terrain (e.g., while the user is using the treadmill). The system may then be configured to manipulate the treadmill (i.e., incline of the treadmill, speed of the treadmill, etc.) based on the terrain that the avatar is currently traversing. The system may utilize one or more imaging devices to identify particular gestures performed by the user. In this way, the system may be configured provide hands free control to the user while the user is using the treadmill.