User blog comment:BlueBarracudas555/Ridonculous Race Contestants Ages/@comment-11883116-20150806230545/@comment-1527105-20150807010006

I don't remember the line correctly, but didn't they just mention Chris had forgotten about Larry for 3 years, rather than not being on Wawankwa for 3 years? If so, the timeline could be:

2007: Chris chills with Larry on the island, TDI cast are still safe and unsuspecting at home and 15.

2008: TDI starts early summer. TDA starts late summer/early fall. They're 16.

2009: TDWT starts early in the year. Ends early April. None of them are old enough to gamble. They're 17. TDRI starts early summer, around the point TDI started. They're 16.

2010: TDAS starts very soon after the anniversary of TDRI ending. TDI cast is 18. TDRI cast is 17. TDPI starts later in the Summer. They're 16.

If Owen, Noah and Geoff are 19 and Leonard is still 16, RR could be starting in late 2010 or early 2011. It all depends on when their birthdays are. Either the vets recently had birthdays or Leonard will have one soon.