For most motorists, a long-distance drive involves navigating interchanges, fluctuating speed limits, and the natural curves of the landscape. However, in the eastern province of Saudi Arabia, a single stretch of Tarmac has stripped away every distraction to create a driving experience unlike any other. Highway 10, originally built as a private road for King Fahd, has officially secured the Guinness World Record for the longest straight road in the world, spanning a remarkable 159 miles (256 kilometres) without a single bend.
The road cuts a surgical line through the Rub al Khali, or "Empty Quarter" - the largest contiguous sand desert in the world. It connects the city of Haradh, known for its massive oil and gas reserves, to Al Batha near the border of the United Arab Emirates. Infrastructure projects of this scale in the Middle East are essential for linking remote industrial hubs. For over two hours, drivers face an unwavering horizon with no hills, no turns, and no change in scenery. While Australia's Eyre Highway previously held the title with its 91-mile "90 Mile Straight", Saudi Arabia's Highway 10 has extended that record by nearly 70 miles.
Maintaining a 159-mile straight line in one of the most hostile environments on the planet is a significant technical achievement. The desert is characterised by shifting dunes and extreme heat, with summer temperatures regularly exceeding 50°C. Despite these conditions, the asphalt remains perfectly level.
Paradoxically, the primary danger on Highway 10 isn't the terrain, but the lack of it. The "dead straight" nature of the road frequently induces "highway hypnosis", where the brain begins to disengage due to a lack of visual or physical stimuli. While the road is physically simple to navigate, the sheer monotony makes it a mentally taxing stretch of Tarmac for long-haul truckers and commuters alike.
A Reddit user who drove on the road said: "I remember back in the day, there was a very high ratio of fatal accidents on this road because people would just fall asleep due to no activity/turns/traffic for long stretches. At night, it was more or less star light and headlights with no other features on the terrain."
