This was brought up in the nose runs when swimming thread but a nose clip i don’t think would work with running or biking. So what has worked for you? Steroids, nasal spays, complementary or alternative therapies, diets etc. It sucks to be running and have a coughing fit cause your nose keeps running.
I use Nasacort AQ and Allegra D when I need something. There are some old but good threads on rhinitis going back several years.