A fundraiser to protect our Ottawa River

The Riverkeeper 4K open water swim is a unique, inter-provincial swimming event in the Ottawa River. Uniting both provincial shores of our river, the swim highlights the need for collaboration towards swimmable, drinkable, fishable waters! Part of the Global Swim Series, this year's swim will feature three distances: 4km, 1.5km, and 750m.

August 10, 2019

Welcome Nadine Bennett, who has agreed to take on the role of Race Director for this year. Nadine has race-directed other events, including the King Wolf Swim. She's a big fan of swimmable, drinkable, fishable waters, and is an avid marathon distance and cold water swimmer herself.

2018 Results




Tom Anzai - In Memory We Swim

Tom was the founder and race director of our annual Riverkeeper 4K swim. He had a vision to swim from one shore of the historic Ottawa River to the other, swam it, then invited all fellow swimmers to participate in what he called an epic charity event. His passion for the event was contagious. He didn’t miss an opportunity to speak not only of the swim, but also of the importance of a healthy Ottawa River. Tom exemplified dedication and community service. We will remember him fondly.

Our Partners

Our Supporters

The Riverkeeper 4K is a member of the GSS.  With more than 98,000 swimmers in 122 races, in 33 countries (and still growing), the Global Swim Series is the largest open water swim series in the world.  Earn points for participation and placing in the 4K and other GSS swims to earn ranking in the series.