Koolbiri, the Aboriginal Mailman Who Connected Australia’s Remote West Coast in the 1870s

Koolbiri, widely known to colonists as “Mailman Jimmy,” was a legendary Indigenous Australian runner from the Mirning people who served as the sole postal lifeline across the brutal Nullarbor Plain in the 1870s. Operating from roughly 1871 to 1876, he carried the Royal Mail between Fowlers Bay in South Australia and Eucla in Western Australia.

Portrait of Koolbiri in 1875

He traversed a grueling 280 miles (approx. 450 kilometers) one way, meaning a full round trip spanned nearly 560 miles (700 kilometers). Koolbiri completed this trek every single fortnight. He would run the mailbags out during one week, and return with a new batch the next.

According to colonial records and an obituary printed in Adelaide’s Saturday Journal in 1923, he routinely completed the trip faster than a man on horseback. He carried no specialized gear and ran entirely barefoot through one of the harshest, most arid landscapes on Earth.

Where colonial settlers saw an empty, lethal desert, Koolbiri saw his ancestral home. His incredible endurance relied entirely on his profound bushcraft skills and an intimate knowledge of hidden rock holes and reliable water supplies that only he knew how to find. He lived completely off the land during his journeys, hunting and gathering as he ran.

For nearly six years, Koolbiri was the only line of communication connecting these isolated frontier outposts before the official Eucla Telegraph Station was established in 1877. Despite the critical and superhuman nature of his work, colonial authorities only paid him in meager rewards, such as tobacco.

Mirning elder Bunna Lawrie recalled Koolbiri with reverence, saying, “He was the only man who could walk as fast as a horse.” To many, Koolbiri’s abilities seemed beyond explanation, almost magical. “They thought, ‘This man must be a magic man,’” Lawrie said, expressing hope that future generations would draw strength from his story. Today, a photograph of Koolbiri dating to around 1875, preserved by the State Library of South Australia, stands as a powerful tribute to a man whose footsteps once bridged some of the most remote lands in Australia.