Andy Donaldson completed a 34-mile swim up the Ord River in Western Australia to attempt a Guinness World Record [1].
The feat highlights the extreme physical and mental limits of marathon swimming in environments containing apex predators. By attempting this record, Donaldson sought to establish a new benchmark for open-water swimming in hazardous conditions.
Donaldson, a 35-year-old British-Australian marathon swimmer [2], performed the swim on April 28, 2024 [4]. The route took him through the Ord River, though some reports also associate the effort with Lake Argyle [1], which is Australia's largest man-made reservoir.
The swim was conducted in waters inhabited by a significant population of crocodiles. While some reports estimate there were 5,500 crocodiles in the water [1], other sources suggest the number could be as high as 35,000 [5].
Donaldson aimed to break the Guinness World Record for the longest open-water swim with crocodiles [1]. The 34-mile distance [1] required the swimmer to navigate a river system known for its dense crocodile population over several hours.
Support teams monitored the swim to ensure safety and verify the distance for record-keeping purposes. The attempt focused on the intersection of endurance athletics and high-risk environmental exposure.
“Andy Donaldson completed a 34-mile swim up the Ord River”
This attempt represents a niche in extreme sports where athletes combine endurance with environmental risk. The disparity in reported crocodile populations, ranging from 5,500 to 35,000, underscores the difficulty of quantifying wildlife in large reservoir systems, while the swim itself tests the limits of human endurance in one of the world's most dangerous aquatic habitats.
