A non-impact exercise device comprising a framework, at least one ramp assembly, a pair of foot support assemblies, a foot location control assembly, and means for adjusting the maximum stride length of the foot support assemblies. The foot support assemblies may advantageously be coupled to the foot location control assembly by a flexible cable linkage. The foot support assemblies each include a foot platform for the user to stand on. The foot support assemblies are coupled to the one or more ramp assemblies of the exercise device. The user exercises by putting force into the device through the foot platforms and/or handles. This causes the foot platforms to roll along the ramps while the user is standing upon the foot platforms. The user may readily vary the length and frequency of the reciprocating stride.