One thing to take note of, if you arrive at any of the C16 or C10 gates, take the train to get to the D, N, and even the A or S gates quickly. If you land at any of the C2 gates it is a matter of either walking to your D gate, or walking up the D concourse to just past the north security head downstairs to take the trains either to N gates or the transfer to the A and S gates. If, however you are looking for steps, you can walk to every gate except S or N gates. (which, btw, is not as long of a walk as it is in SLC from rental cars to the B gates!)