Canada’s Longest Open Water Swim

Est. 2022

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Canada's Longest Open Water Swim for Charity

Conquer Christina Lake, British Columbia

Congratulations Swimmers!

Together we raised over


in our first year (August 2022).

Supporting 5 incredible causes in our community

Big Effort Swim_Rylan McCarthy_Sept 2 2022-092

Will you conquer Christina Lake in 2023?

How It Works

2. Choose a Distance You'd Like To Swim

3. Share your Pledge Page with Friends & Family

4. Fundraise and Swim Your Big Effort

5. Pledge Our Athletes

Conquer The Lake
Marathon Swim Distances

Marathon Swim 36,000m

Our 36km Marathon Swim is the longest course available in Canada and is intended for experienced and elite swimmers with open water practice. This swim is not for the feint of heart and will test the endurance of its athletes. Swimmers will complete two lengths of Christina Lake with the support of kayakers, crew, and safety personnel. 

Half Marathon Swim 18,000m

The shortest of our ultra endurance swim distances, our 18km Half Marathon Swim will take swimmers across Christina Lake in a single effort. This swim is intended for experienced and elite swimmers looking for a big open water and endurance challenge with the support of kayakers, crew, and safety personnel.

Test The Waters
Short & Middle Distance Swims

Ultra Swim 4,000m

The ultra swim is our middle distance event for experienced swimmers looking for a challenging and fun course that keeps them close to shores. Swimmers will complete 7 lengths while navigating technical aspects of sighting and orienteering.

Super Swim 750m

In our shortest course open water event, swimmers will complete three symmetrical lengths of 250m with the final leg parallel to shore. This is a great option for youth, new swimmers, or those looking for their first open water challenge.


We acknowledge and respect that where this event is held and where we all live and work are within the converging ancestral, traditional and unceded territories of the Kootenay/Boundary and Columbia Basin Indigenous Peoples as well as the Metis Peoples whose footsteps have also marked these lands.

When: Held annually over the 3rd last weekend of August (Saturday).

Where: Christina Lake Provincial Lake, 140 Park Road, Christina Lake, British Columbia, Canada

About: Christina Lake is located in the Monashee Mountains near Grand Forks in the Kootenay Boundary Region of British Columbia, Canada and boasts the warmest water of any tree lined lake in Western Canada and is considered one of the cleanest lakes in Canada. It’s picturesque beauty make this a premiere destination for open water swimmers and wilderness enthusiasts. Come visit this summertime mecca and its quaint friendly community for an experience of a lifetime.

Directions: Christina Lake can be accessed via Hwy 3 from Osoyoos & Castlegar, Hwy 395 from Kettle Falls, WA, as well as other roads from Kelowna and the Okanagan area. It is about a 3 ½  hour drive from Kelowna, B.C., a 6 hour drive from Vancouver, B.C.,  a 7 ½ hour drive from Calgary, A.B., and a 2 hour drive from Spokane, WA.

2022 Sponsors - Thank You

To learn more about our sponsors and their impact on our community visit our sponsors page

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