Whatever happened to Parker Muir? Posted by arizonabay Posted by arizonabay posted in Run It Once Training Posted 5 years, 5 months ago Whatever happened to Parker Muir? Hey RIO - where has Parker Muir gone? I have been waiting and waiting for a new Parker Video for what seems an eternity. Is he still an active RIO coach, is he just "on vacation" traveling the world and enjoying life? Loading 10 Comments... Be the first to add a comment You must upgrade your account to leave a comment. This thread has been locked. No further comments can be added.