Upcoming Races & Club Events « All Events This event has passed. Duathlon Nationals April 13, 2019 - April 14, 2019 « Nashua Soup Kitchen Portsmouth Half Marathon & 5K » Add to calendar Google Calendar iCalendar Outlook 365 Outlook Live Details Start: April 13, 2019 End: April 14, 2019 Website: https://www.teamusa.org/USA-Triathlon/Events/National-Championships/2019/2019-Duathlon-National-Championships