Nimbus-13 is a very comfortable running shoe.  Great arch support (which is made better by using Sofsole Arch insole) and very cushion-y. I am by no means a runner but rather a mom who needs a comfortable shoe to exercise in that will help keep my plantar fasciitis at bay!  Now that I am finally in the right shoes for my feet (high arch) fingers crossed my occasional knee discomfort will go away too.  Yay me!  Perhaps I can be the runner I've always wanted to be. =)