IMTalk Episode 629

News: 70.3 Champs showdowns; Results (including Ultra 520k Canada); John ITU update; Coming up Races.  This Weeks Discussion: This week we want to know what you feel is the biggest threat to Iron distance racing in terms of maintaining athletes in the sport. Comment here Age Grouper of the Week: Brent "Waaaaah" Chan sent through this weeks Age Grouper, Valerie Gonzales.  John's History Lesson: This week we look at the history of the 70.3 World Championships.  My First Tri:This week we have an amazing My First Tri. This Weeks Websites: Canada Kona Qualifiers.