Gariep Open

A vast expanse of freshwater opens across the Free State, spreading across 370 square kilometres behind South Africa's largest reservoir. The Gariep Open brings open water swimmers to this inland sea at Gariepdam, staging one of the interior's most distinctive freshwater swimming events. The race headquarters sits at 2 Fiskaal Street, where athletes gather along the Gariepdam waterfront. Swimmers can choose from four distinct courses, including a 500-metre sprint, a 1-kilometre distance, a 3-kilometre challenge, and a 5-kilometre marathon event. The start takes place in the harbour of the Gariep Dam, where calm, sheltered water provides an orderly buffer against any morning chop. In past editions, competitors have enjoyed ideal weather conditions on the water, finding a smooth, glass-like surface that lets you settle quickly into an uninterrupted swimming stroke. Held in the heat of January during the southern hemisphere summer, the swim unfolds beneath an immense sky. Out on the open reservoir course, the sweeping, wide-open landscapes of the Free State stretch toward distant horizons.

Gariep Open: the January 2026 edition and the resort shore

The Kovsie Aquatics Gariep Open Water Swim was held on Saturday, 17 January 2026, as reported by a school whose swimmers took part. On that Saturday one swimmer completed the 3 km event and then returned to compete in the shorter open-water race. The Gariep Open is staged at A Forever Resort Gariep, for competitors from first-time open water swimmers to seasoned racers. At the waterside of Gariep Dam there is a Forever Resorts holiday camp with chalets and boating facilities, and the Gariep Nature Reserve is nearby. Gariep is an ancient San word for great water.

Gariep Dam: South Africa's vast inland reservoir

The vast basin is continuously replenished by the powerful inflow of the Orange River and the Caledon River, alongside several regional spruits. When holding water at full capacity, the reservoir floods more than 36,487 hectares of the surrounding basin. Swimming across a body of water this vast gives the impression of navigating an inland sea rather than a river impoundment. The sheer scale of the expanse creates a quiet sense of isolation once you leave the harbour mouth behind, with wide swathes of open blue water reaching out toward the distant shoreline.

The Ruigte Valley gorge: concrete gravity-arch engineering

The dam owes its existence to the dramatic natural topography of a gorge situated at the entrance to the Ruigte Valley. Because the gorge was simply too broad to support a traditional, pure arch design, civil engineers designed a hybrid concrete gravity-arch structure to brace against the immense volume of impounded water. The completed dam wall remains a towering presence on the landscape, rising to a height of 88 metres and spanning a crest length of 914 metres. On the southern bank of the reservoir at Oviston, the impoundment also feeds the inlet portal for the Orange-Fish River Tunnel, an ambitious engineering conduit.

Gariep Nature Reserve: wildlife along the northern shoreline

About two kilometres from the race venue lies the Gariep Nature Reserve, which encompasses the entire northern shoreline of the dam. The reserve protects the wild perimeter right down to the water's edge, preserving a scenic, undeveloped boundary along the northern waters. Beyond the water, the reserve offers hiking trails and bird watching expeditions.

Gariepdam shoreline: crest walks, water sports, and night skies

After finishing the swim, visitors can experience the reservoir from high above by taking a walk along the 914-metre crest of the dam wall. Strolling across the top provides sweeping views of the surrounding countryside on one side and the endless expanse of impounded water on the other. The broad, sunlit reservoir is also a central hub for active water recreation throughout the warm months, regularly hosting sailing, windsurfing, and freshwater angling. As daylight fades over the interior plateau, the region reveals one of its most remarkable features: dark, unpolluted skies. Because the dam sits far from major urban centers, the night sky here is renowned for exceptional clarity, turning the lakeshore into an extraordinary vantage point for stargazing. Sitting beside the quiet water under a bright canopy of southern stars offers an unforgettable finish to a mid-summer swimming journey across South Africa's greatest reservoir.