A rough terrain cart for a wheel chair includes a frame operable to support a wheel chair and a wheel chair user. A pair of cart drive wheels are rotationally mounted to the frame. A locking mechanism is engaged with the frame. The locking mechanism is operable to secure the wheel chair to the cart. A rotational mechanism is engaged with the frame. The rotational mechanism is configured to support a pair of wheel chair drive wheels of the wheel chair and is operable to enable the wheel chair drive wheels to rotate when the wheel chair is secured to the cart by the locking mechanism. A transmission system is engaged with the frame. The transmission system is connectable to the wheel chair drive wheels. The transmission system is operable to transmit torque from the wheel chair drive wheels to the cart drive wheels.