Springfield-based Nick Symmonds is a two-time U.S. Olympian (2008, 2012), silver medalist in the 800 meter race in the 2013 World Championships, and co-founder/CEO of Run Gum (reviewed here). Last June, Run Oregon’s Joe Dudman interviewed him on a number of topics ranging from starting Run Gum to race tactics to public causes that he supported, including LGBT rights and gun control. Since that interview, Symmonds announced earlier this year that he would be retiring from…