Across the Lake Swim Skaha Lake

Stretching south of the Penticton isthmus, Skaha Lake gathers the waters of the Okanagan River in a corridor of water that nears 23 °C (73 °F) in high summer. Across the Lake Swim Skaha Lake is an open water swimming race held in the freshwater of Skaha Lake in Penticton, British Columbia, Canada. Skaha Lake stretches from the southern tip of Penticton to the community of Okanagan Falls in the Okanagan Valley. The event takes place in August and is organized by Across the Lake Swim. Swimmers can choose between three distinct course lengths: a 2,500-metre swim, a 4,500-metre route, and a demanding 11,800-metre ultra-distance marathon swim. Covering nearly twelve kilometres down the length of the lake, the longest distance requires steady pacing, sustained feeding strategies, and consistent navigational focus across open freshwater. However, open-lake conditions can change across the miles: calm early morning surfaces have turned wavy and choppy around the 3-kilometre mark.

The Skaha Lake courses: Skaha Main Beach to Christie Beach

The 11.8 km swim of Across the Lake Swim Skaha Lake starts at Skaha Main Beach in Skaha Lake Park, Penticton, and finishes at Christie Beach in Okanagan Falls. The 4.5 km swim starts at Pioneer Park in Kaleden and also finishes at Christie Beach in Okanagan Falls. The 2.5 km swim starts and finishes at Christie Beach in Okanagan Falls. On the 11.8 km swim there is a cut-off of 4.5 hours at Ponderosa Point, 8 km into the course, and an overall cut-off of 6.5 hours. Swimmers in the 11.8 km are tracked by GPS, and participants receive a link so friends and family can follow their progress in real time. The Skaha Lake Ultra Swim began in 1985, started by local sports figure Steve King as a complement to the Ultra International Triathlon, which became an official Ironman the following year.

Skaha Lake: warm waters and dry shrubland

Skaha Lake covers a surface area of approximately 20 square kilometres and drops to a depth of 55 metres. The lake is located north of the Columbia Plateau shrubland, recognized as the only xeric shrubland ecoregion anywhere in Canada. This arid, sun-baked landscape creates a distinct dry environment around the basin. In these mild freshwater layers, there are resident populations of kokanee salmon, rainbow trout, and smallmouth bass. About nine kilometres from the race area lies Okanagan Lake, an expansive body of water formed 10,000 years ago when melting glaciers flooded the valley. Reaching a maximum depth of 232.3 metres and an average depth of 75.9 metres, this northern basin has frozen over only eight times in the last 110 years.

Syilx roots and sternwheelers on the lakes

The Syilx people were the original inhabitants of the valley, naming their settlement Phthauntac, meaning the ideal meeting place, around Okanagan Lake and Skaha Lake. Penticton itself developed on the narrow strip between both water bodies, with Okanagan Lake lying to the north and Skaha Lake spreading to the south as part of the broader Okanagan River drainage system. During early settlement, the complete absence of wharves meant that cargo scows laden with building materials had to be run directly onto the beaches for loading and unloading. That rudimentary era of shoreline freight handling ended in 1912, when permanent wharves were built on the shores of Penticton, Kaleden, and Okanagan Falls.

Steamboat navigation brought vital transport but also hazardous incidents to the lake, including the sternwheeler Greenwood, which was destroyed by fire at Okanagan Falls around 1903. Earlier passenger and cargo routes were pioneered on Okanagan Lake by the sternwheeler SS Aberdeen, which launched in 1892, followed by the SS Okanagan in 1907. About four kilometres from the race venue, Penticton preserves this rich inland maritime heritage on Lakeshore Drive West. Here rests the SS Sicamous, Canada's largest steam-powered, steel-hulled sternwheeler, built in 1914 for passenger and freight service on Okanagan Lake. The ship generated steam by pulling water directly into its boiler from the lake, operating until its retirement in 1936. To prevent hull damage caused by internal corrosion inside its coal storage holds, the tug was beached in Penticton after 1993, surviving today as the only interior steam tug preserved in British Columbia.

Skaha Bluffs and the Okanagan Falls outlet

Skaha Bluffs Provincial Park is located on a hillside above Skaha Lake, drawing outdoor enthusiasts to a premier rock climbing area that features over 1,200 documented routes. Near Trout Creek, the park safeguards rare old-growth cottonwood riparian habitat. These tall cottonwood stands and wetland thickets shelter insects, small mammals, and numerous bird species, including the northern oriole, warbling vireos, and the Lewis's woodpecker. About fourteen kilometres from the Penticton starting line, Okanagan Falls Provincial Park marks the southern outlet of Skaha Lake where the waters rejoin the Okanagan River. The park was established to protect the riparian area around the natural waterfall located below the lake's outlet. In 1950, the natural step-like rapids of the outlet were destroyed by the construction of a flood-control dam, after which non-native trees such as Chinese elm, Norway maple, red ash, and Lombardy poplar were introduced. Today, the river park supports 18 species of bats, representing one of the highest concentrations in Canada, and closes every third weekend of September for the Okanagan Nation Alliance's Salmon Feast.

Skaha Lake Park: beaches and the waterfront

Penticton features seven public beaches across its two waterfronts, including Okanagan Lake Beach, Okanagan Lake Park Beach, Marina Way Beach, Three Mile Beach, Airport Beach, Skaha Lake Beach, and Sudbury Beach. The regional love for lake swimming spans generations: the Penticton Aquatic Club was established in 1913 at the foot of Winnipeg Street on Okanagan Lake. To accommodate swimmers on the south side of town, an ancillary clubhouse for the Penticton Aquatic Club was soon erected right on the beach of Skaha Lake. Skaha Lake Park remains a popular destination where locals and visitors gather to swim in warm water and relax on soft sand. A paved beach-front promenade extends along the shore, giving spectators a walkway to watch swimmers track toward the horizon. The Rotary Centennial Pavilion, situated within the park grounds, serves as an established landmark used for wedding ceremonies. After pushing through miles of freshwater, stepping out onto the sand of Skaha Lake brings swimmers back to the valley.