The 2013 O.C. Duathlon is the quaifier for the ITU Duathlon World Championship to be held in August in Ottawa, Canada. Qualification: The top six finishers in each age group (rolling to 20th place) will qualify for Team USA in their choice of race distance ? standard or sprint. Six athletes per age group will be accepted for the standard-distance event and six athletes per age group will be accepted for the sprint-distance event.. That's 12 per agegroup going to the Worlds!!!