I would not keyframe the hip for actual distance movement, because you don't want to get those type of keyframes mixed up with any bending, twisting, side-tot-side movement your hip is doing. Best to keep that seperate incase you have to go back and delete keyframes.

Tim, what you are saying will probably work just fine. Some run or jog animation have the character moving faster in the first part of the cycle than in the second part of the cycle and those type of animation will take more keyframing for the overall movement. But generally if you find the correct distance for your end point, your jog/run/walk will look fine.

If you are really in a rush, you can always shoot the jogger from below, at an angle where you can't see the ground, and you will never see any sliding (even if its there). :)

Hope this helps.