June 5th is National Running Day, so take this opportunity to get outside and run or at least sign up for an upcoming race. National Running Day is held on the first Wednesday in June each year. It's a day simply to celebrate running. You can choose to run with buddies, meet new friends to run with, sign up for a race, make a running resolution, or plan a post-run party. Cities and communities across the country hold special community runs — some for charity, some just for fun.