There is a gym at Hong Fei Road 1307, Xiaoshan District, Hangzhou. There are all kinds of fitness equipment, such as treadmill elliptical machine strength equipment and so on, and there are many brands.
There is also a treadmill shop in 5L Tianjie, Longhu, Binjiang, which is called Bird and Animal Fitness and also sells massage equipment. It depends on which side you are on.