Upcoming Races & Club Events « All Events This event has passed. Ironman 70.3 Boulder August 4, 2018 « Whaling City Triathlon & Duathlon Ironman Maine Training Camp » Add to calendar Google Calendar iCalendar Outlook 365 Outlook Live Details Date: August 4, 2018 Event Category: Half-Iron Tri Website: http://www.ironman.com/triathlon/events/americas/ironman-70.3/boulder.aspx#axzz3yxwyD7Rv Organizer Ironman View Organizer Website