There will likely be a time as a runner that you find yourself running on unstable surfaces. Are you intimidated by trail running, running in sand, or in snowy or icy conditions? We would hate for training to slip (pun intended) when presented with these various terrains. Between added soreness, tightness, and potential for injury can train how our training feels and how we execute it. In this article, we explore the obstacles presented by unstable surfaces and how we can work through these problems to continue effective training.