The Thousand Islands Open (TIO) is the premier 3-day bass fishing event in Canada!!  This annual event is headquartered at Portsmouth Olympic Harbour in Kingston, ON July 27-29, 2023.  The 100 team field will battle it out on the St. Lawrence River and Lake Ontario.  The 3-day tournament attracts the largest field of international anglers, competing for a total guaranteed cash payout of $100,000 and a grand prize giveaway of a Bass Cat bass boat powered by Mercury Marine valued at over $75,000.

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Tournament Locations


  • Thousand Island Open