The ProForm ZT4 Treadmill looks a lot like the ZT6 model. However, while the ZT4 model features a smaller tread belt along with a deck which has only one suspension cell, a less powerful motor, and just sixteen workout apps, the ZTE features lots more than that.

Hence, although ZT4 treadmill cannot be considered the ideal treadmill for distance running, it can still be used for running workout as it offers a range of training opportunities.
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