Moving through Mongolia requires accepting that this country operates under different assumptions than most travel destinations. The nation spans 1.56 million square kilometers with a population of 3.3 million, producing a density of 2 people per square kilometer, the lowest on Earth. This is not a figure that exists in guidebooks as trivia—it governs everything about how you will move from one place to another.
Ulaanbaatar contains 1.6 million residents, nearly half the national population. The capital sits at the terminus of roads and rail lines that become increasingly theoretical as you move away from it. The Trans-Mongolian Railway runs 1,110 kilometers from the Russian border at Sükhbaatar through Ulaanbaatar to the Chinese border at Zamyn-Üüd, passing through Darkhan and Erdenet. This line carries both passengers and the majority of Mongolia's international freight. Domestic passenger trains operate between Ulaanbaatar and Darkhan four times weekly with a journey time of approximately 5 hours for 240 kilometers. Service to Erdenet runs twice weekly at 8 hours for 370 kilometers. A branch line extends west to Choir and south to Sainshand. No passenger rail serves western or northern Mongolia. The carriages are Soviet-era stock with hard and soft class compartments. Tickets are sold at station windows in Ulaanbaatar's central railway station or through licensed agents. Booking opens 10 days before departure. During Naadam Festival in July, trains sell out within hours of booking opening.
Road conditions in Mongolia divide into three categories that do not correspond to what maps indicate. Paved roads total approximately 4,800 kilometers as of 2023. The primary paved routes run from Ulaanbaatar south to Zamyn-Üüd on the Chinese border, north to Darkhan, and scattered sections around Erdenet. Every other line on a map marked as a road represents either compacted dirt, gravel, or simply the route vehicles have historically taken across open steppe. The Mongolian government designates these as official routes, but pavement does not exist. During the brief summer from June to August, these tracks become passable for experienced drivers in appropriate vehicles. From September through May, conditions vary from difficult to impassable depending on rain, snow, and freeze-thaw cycles. The spring thaw from April to May turns vast sections into mud fields that strand vehicles for days. No road signs exist outside major cities. Navigation occurs by GPS coordinates, landmarks, and local knowledge.
Domestic flights connect Ulaanbaatar to 17 aimag capitals through three carriers: MIAT Mongolian Airlines, Aero Mongolia, and Hunnu Air. MIAT operates the majority of routes using Airbus A319 and Boeing 737 aircraft on longer routes, with Fokker F50 turboprops to smaller airstrips. Flight frequency depends on destination. Popular routes to Khövsgöl Nuur via Mörön operate daily in summer, three times weekly in winter. Remote western destinations like Ölgii receive two to three flights weekly year-round. Flight time from Ulaanbaatar to Ölgii is 2 hours 45 minutes, to Khovd 2 hours 30 minutes, to Mörön 1 hour 30 minutes. Domestic ticket prices range from 180,000 to 450,000 tögrög depending on destination and season. Weather cancellations are common. Fog, wind, and snow regularly close rural airports that lack instrument landing systems. Airlines operate a flexible rebooking policy because delays of one to three days occur frequently. Luggage allowance is typically 15 kilograms checked plus 5 kilograms carry-on, strictly enforced because small aircraft require precise weight distribution. The domestic terminal at Chinggis Khaan International Airport opens 2 hours before scheduled departure. Check-in closes 40 minutes prior to departure without exception.
Buses in Mongolia operate along a spectrum from scheduled urban transit in Ulaanbaatar to informal share vehicles that leave when full. Within the capital, the city bus system runs approximately 60 routes using a mix of Chinese Yutong buses and older Russian models. Fare is 500 tögrög paid to a conductor on board. Buses operate from approximately 6:00 AM to 10:00 PM with frequency varying from 10 minutes on central routes to 40 minutes on peripheral lines. No maps exist in English at stops. Route numbers and destinations appear in Cyrillic only. Google Maps shows real-time bus positions in Ulaanbaatar with reasonable accuracy as of 2024.
Intercity buses depart from multiple stations in Ulaanbaatar depending on destination. The Dragon Bus Terminal handles routes south to Choir, Sainshand, and Zamyn-Üüd. The Western Bus Terminal serves Kharkhorin, Arvaikheer, and other central aimags. The Eastern Bus Terminal covers Choibalsan and eastern Mongolia. Buses to northern destinations leave from the area near the railway station. These are not formal terminals with ticket offices and posted schedules. They are parking areas where bus companies operate. You find your bus by asking drivers and other passengers. Buses are typically Chinese-made coaches with 40 to 50 seats. Departure times are approximate. The bus leaves when sufficiently full, which may be 30 minutes to 2 hours after the stated time. The journey from Ulaanbaatar to Kharkhorin covers 370 kilometers and takes 6 to 8 hours on a partially paved road. Ulaanbaatar to Mörön is 680 kilometers taking 16 to 20 hours on unpaved roads. Toilet stops occur at roadside opportunities, not facilities. Buses do not operate during winter to most rural destinations because roads become impassable.
Shared taxis and minivans called mikrs operate on the same intercity routes as buses. They gather at the same departure areas. A mikr typically seats 8 to 10 passengers in closer quarters than a bus. They cost 1.5 to 2 times the bus fare but depart more quickly because they fill faster and travel at higher speeds. The journey from Ulaanbaatar to Kharkhorin costs approximately 25,000 to 30,000 tögrög per person by mikr versus 15,000 to 20,000 by bus. Drivers operate on a schedule that maximizes their daily runs, meaning they drive aggressively and often through the night. Road accidents involving mikrs are disproportionately high. The vehicles themselves are typically Toyota HiAce vans with 200,000 to 400,000 kilometers of wear on Mongolian roads.
Private vehicle rental in Mongolia requires understanding that international rental agencies do not operate outside Ulaanbaatar, and the vehicles available differ from standard rental fleets. Companies in the capital rent Toyota Land Cruisers, Russian UAZ vans, and similar four-wheel-drive vehicles designed for unpaved terrain. A Land Cruiser rents for approximately 150,000 to 200,000 tögrög per day depending on age and condition. This rate does not include fuel, which costs roughly 3,000 tögrög per liter for 92-octane gasoline as of 2024. A journey from Ulaanbaatar to Lake Khövsgöl and back consumes approximately 300 liters. Rental terms typically require hiring a driver for an additional 50,000 to 80,000 tögrög daily. This is not a luxury but a practical necessity. The driver knows where the road actually goes when GPS shows only empty terrain, can repair common mechanical failures in remote areas, and speaks Mongolian for interactions in villages. A foreigner who rents a vehicle without a driver and breaks down 200 kilometers from the nearest settlement will wait for another vehicle to pass, which may be hours or days depending on the route and season.
International driving permits are legally recognized in Mongolia when accompanied by a valid license from your home country. Practically, police at checkpoints outside Ulaanbaatar often cannot verify foreign documents and may require payment for alleged violations. Driving occurs on the right side of the road where roads exist. Speed limits are 60 km/h in urban areas, 80 km/h on secondary roads, and 100 km/h on paved highways, though enforcement is sporadic. Traffic police conduct routine stops to check documents and vehicle registration. These interactions frequently involve requests for payment for minor or invented infractions. The amount varies but typically ranges from 20,000 to 100,000 tögrög depending on the officer's assessment of your ability to pay. Refusing leads to extended document inspections and potential vehicle impoundment until you appear at a local police station. Most travelers pay.