As Denver warms up each spring, runners and hikers begin increasing mileage, hitting trails, and spending more time outdoors. Unfortunately, this is also when many people begin experiencing recurring knee pain, hip tightness, ankle stiffness, plantar fasciitis, and low back discomfort. In this article, we explore some of the most common running and hiking injuries we see during Colorado’s outdoor season, and why movement patterns, mobility restrictions, and compensation can play a major role in how these problems develop.