Sneeze a lot after running and i have no allergies, help?

Exercise rhinitis: Some people have airway problems only associated with sports and physical activities. This is not uncommon with dry or cold air, such as in colorado. Non-allergic nasal congestion and drainage may occur after running (exercise-induced rhinitis) or cold-air exposure (skier's nose). A similar disease is isolated exercise-induced asthma. A chronic sinus infection can also be underlying.