Running often comes with discomfort. Hard workouts burn, legs feel heavy, and muscles may be sore after increasing mileage, adding speed work, or running hills. But when does normal training discomfort become a running injury? One of the most common questions we hear from runners is: “Can I keep running through this pain?” The answer depends on how the pain behaves, whether it changes your running form, and how your body responds during the following 24 hours. Ignoring pain c