Open water swimming at sunrise in Lake Ontario

Take The Plunge.

Welcome to the Lake Ontario Swim Team (L.O.S.T.). We are a grassroots open water swim group that meets every Saturday in the summer. Come out and join one of the largest open water groups in the world!

Swim With Us LOST Race
8:00 AM Every Saturday (Jun-Sep)
350+ Annual Members
LOST Swimming Community 1 LOST Swimming Community 2 LOST Swimming Community 3 LOST Swimming Community 4

Safe Environment

Get open water experience in a safe, supportive environment with regular swimmers and kayakers keeping an eye out.

Fun Community

A fun & exciting way to meet passionate, like-minded individuals! We welcome triathletes, marathon swimmers, and beginners alike.

Coffee After

Join us for coffee after the swim at Second Cup or Pilot Coffee. It's the best way to warm up and get to know the group!

LOST Swimming Community Gathering

A Grassroots Legacy

Started in 2006 by Rob Kent while training for his English Channel attempt, what began as "let's meet at the lighthouse and go for a swim" has grown into a vibrant community.

Whether you're training for an Ironman, a marathon swim, or just looking to enjoy the incredible experience of open water swimming in Lake Ontario, you have a place here. We swim along one of the most beautiful shorelines in Canada.

Lakeside Park Beach

1 Navy St, Oakville, ON
Rain or shine, cold or hot!

Our Growth

LOST Swimmer Stats 2006-2025 showing total of 10,828 swims
LOST Swimmer Stats 2006-2025, Total Membership = 2786 LOSTies
LOST Swimmer Stats 2006-2025, Average Saturday swim turnout