The Ultimate Swim
St. Helena Island Ultra Marathon Swim hosted by Open Water Africa
A 47km Unassisted Circumnavigation of the World’s Most Remote Oceanic Frontier
The ultimate adventure that marathon open water swimming did not know it had been waiting for. Boldly step off the map and cement your legacy by taking on a raw, cinematic 47km circumnavigation of one of the most isolated settled islands on Earth. Situated deep within the South Atlantic Ocean, Saint Helena Island rises as a rugged volcanic fortress surrounded by crystal-clear, untouched waters teeming with rare marine life.
This is more than a race—it is a spiritual and physical journey that demands peak physical endurance and an unbreakable mindset. Your global marathon swimming portfolio is simply not complete until the St. Helena Island Ultra Marathon is permanently stamped onto it.
The Challenge & The Ecosystem
Experienced open water swimmers are invited to join an elite, pilot-guided expedition around Saint Helena’s dramatic coastline. Because the island deeply values its Class VI Marine Protected Area, you will swim through a pristine oceanic sanctuary dedicated to total biodiversity and marine conservation.
Elite Safety Infrastructure: You are completely backed by two expert pilot support boats monitoring navigation, safety, and feeds.
Tactical Navigation: A clockwise swim direction is precision planned in the immediate days leading up to your launch to match real time currents and optimal ocean conditions.
Whale Shark Season: Our exclusive booking windows overlap perfectly with the annual aggregation of majestic Whale Sharks (Rhincodon typus), providing a rare opportunity to share the water with the ocean’s most magnificent gentle giants.
Key Swim Specifications
Location: Saint Helena Island, British Overseas Territory (15.9650° S, 5.7089° W)
Distance: 47 Kilometre Circumference Swim
Format Options: Solo Attempts or Relay Participations
Water Temperature: 22°C to 26°C (Warm South Atlantic current)
Ambient Temperature: 24°C to 29°C
Experience Level⭐️⭐️⭐️⭐️⭐️ (Extreme / Elite Endurance)
What to Expect
True Test of Grit: A demanding, highly strategic swim that forces you to dig deep into your soul to hit the landing steps.
Wild South Atlantic Conditions: Face unpredictable ocean swells and moving currents.
Unrivalled Wildlife: High probability of encounters with massive whale shark aggregations, pods of dolphins, and pristine marine ecosystems.
An Enduring Legacy: A historic feat celebrated by the local island culture, earning you a standout achievement that very few people on earth can claim.
Booking Windows & Availability
2027 Season: mid-February to early April (Only 3 Slots Remaining!)
2028 Season: Bookings are officially open.
Note: Slots are highly restricted to ensure dedicated boat support, optimal safety, and proper weather windows for every individual athlete.
Secure Your Slot On The Starting Steps
Are you ready to attempt what few have ever dreamed of? Reach out directly to secure one of our remaining slots or to receive our comprehensive expedition brief.
Swim Co-ordinator: Howard James
Inquiries & Bookings:
