I saw an article while trying to figure out my own health, in a study published in the Annals of Allergy, Asthma & Immunology, 56% of endurance athletes experienced rhinorrhea (rhinitis) when exercising outdoors. I've been increasing my running distance since I started taking my fitness training seriously andI have noticed my nose always starts to run after a certain number of miles. my rhinitis is non allergic and has been happening since my childhood during sports. I have been running without tissues as I wouldn't be able to whip out a pack of cleanex whenever I want in PRMC, the nose running is manageable but just means I start mouth breathing and eventually swallowing air (i.e. not a big issue but can be annoying as good breathing is important to reach your v02 max). GP couldn't do anything and just gave me steroid nasal spray in case it was allergy induced - but I already knew it wasn't. Does anyone have any advice on how to overcome this or tips on managing it while long distance running/ doing exercise?