Abstract: A treadmill support belt including a belt portion adapted for coupling with a treadmill user. A back support is secured to the belt portion. The back support is defined by an upper edge, a lower edge, and opposed side edges. The back support has a pair of lateral supports extending outwardly from the opposed side edges thereof. A pair of securement straps are coupled with respect to the back support and the vertical support of the treadmill. The pair of securement straps each have a first end and a second end. The first ends are secured to the pair of lateral supports of the back support. The second ends are couplable with the lower edge of the back support after the securement straps have been wrapped around the vertical support of the treadmill.