Overland crossings hit different: Some trips you book to relax. Others you take because you want to feel, just once, how vast this planet truly is. The following four routes belong firmly in the second category: long, unbroken lines through deserts, steppes, and remote highlands, with no shortcuts and no second chances. Most people who drive, ride, or walk them do it exactly once in their lives. Not because once is enough, but because routes like these demand serious preparation and a travel window that doesn’t come around twice a year.
The Gobi-Taiga-Traverse: Straight across Mongolia
Few journeys connect so many climate zones in a single line. 34 days, roughly 3,600 kilometers, your own 4×4 – from the red canyons of the southern Gobi to the forests of the northern taiga, home to the Tsaatan and their reindeer herds.
The route runs through the remote canyon system of Khermen Tsav, over the singing dunes of Khongor Els, and finally across the Jigleg Pass, where winch recoveries are routine rather than exceptional. To visit the Tsaatan, travelers leave the vehicles behind and ride half a day through forest and bog: three nights in a reindeer camp, not a photo stop but a genuine glimpse into a way of life that has almost vanished elsewhere.
The weather window is razor-thin: the Jigleg Pass is only passable between the spring snowmelt and the summer rains. Miss that moment, and you miss the season entirely. Overland crossings in Mongolia require strong vehicles and a guide who knows the country. All you have to do then is to enjoy the stunning landscape, lovely locals and amazing trip. Getting to Mongolia is pretty easy from around the globe. Read the full guide how you can reach your ultimate overland crossing destination.
Empty Quarter Overland Crossing Oman: through the largest sand sea on Earth
The Rub’ al-Khali covers around 650,000 square kilometers: larger than France, and largely uninhabited. The Empty Quarter Overland Crossing in southern Oman follows the footsteps of explorer Bertram Thomas, who crossed the desert in 1930.
Starting from the Dhofar region, the route passes the rediscovered ruined city of Ubar, once called the “Atlantis of the Sands”, and continues through dune chains, some rising over 250 meters. Camping here means spending the night in one of the quietest landscapes on Earth: no lights, no engine noise, just sand to the horizon.
Simpson Desert Overland Crossing: Australia’s red dune desert
More than 1,100 sand ridges stretch across roughly 800 kilometers. The classic route follows the French Line from Dalhousie Springs to Birdsville, about 500 kilometers, at least three to four days, often at an average speed of just 20 km/h.
Between the dunes: no settlements, no fuel, no signal, full self-sufficiency is mandatory. The desert is completely closed from December to mid-March due to extreme heat; the overland crossing travel window runs from May to October.
The Sprengisandur Route: Iceland’s highland overland crossing between two glaciers
Not every great crossing needs sand or altitude. The Sprengisandur Route (F26) cuts straight through Iceland’s uninhabited interior, running for about 200 kilometers between the glaciers Hofsjökull and Vatnajökull. It’s the longest of Iceland’s highland roads, and one of the most exposed: a landscape of black volcanic sand and moon-like emptiness, with barely another vehicle in sight for hours.
The road is only accessible to rugged 4WD vehicles with good ground clearance, due to rough surfaces and hazardous unbridged river fords, some running as deep as roughly one meter, where crossing with more than one vehicle is recommended. Fuel is scarce along the way: the two nearest stations sit roughly 240 kilometers apart, which is why unprepared drivers are occasionally seen stranded, waiting for someone to spare them diesel.
The route only opens for a few short months each year. Its earliest opening dates range from mid-June to mid-July depending on the section, and the road closes again once the first snow returns: a window measured in weeks, not months.
What these overland crossings have in common
They demand real self-sufficiency, since there’s no infrastructure to fall back on. And they lead to places that remain the way they are precisely because so few people ever reach them. That’s exactly what makes them trips you don’t book twice: you experience them once, and carry them with you for life.
