Luján to Atlántida, Uruguay is about 358 road miles (576 km): roughly 7 h 38 min at the wheel if you don't stop. You cross from Argentina into Uruguay at about mile 147, at the Gualeguaychú–Fray Bentos bridge.
Full advisory: Argentina, Uruguay. Advisory issued: Argentina July 10, 2026; Uruguay July 28, 2026; checked October 10, 2026.
On the roads, the State Department says:
- Argentina: “Drivers in Argentina tend to be aggressive, especially in Buenos Aires, and often ignore traffic regulations.”
- Uruguay: “Illumination, pavement markings, and road surfaces for secondary roads can be poor.”
| Distance | 358 mi (576 km) |
|---|---|
| Driving time, no stops | 7 h 38 min |
| Main roads, in order | RP47 → RP6 → RN12 → RN14 → RN136 |
| Border crossing | about mile 147, Argentina → Uruguay (the Gualeguaychú–Fray Bentos bridge) |
| Regions on the route | Buenos Aires, Entre Ríos, Río Negro, Soriano, Colonia, San José, Canelones |
| Fuel estimate (car at 25 mpg) | about 14.3 gal; actual use varies by vehicle and traffic |
| Stops listed below | 8 |
Getting across the Argentina–Uruguay border
The route crosses at about mile 147, at the Gualeguaychú–Fray Bentos bridge, from Entre Ríos into Río Negro. Plan on two checks on each side: immigration for your passport and customs for the car.
| Entering Uruguay (U.S. citizens) | No visa needed for visits of 90 days or less. Passport: must be valid for 6 months beyond your arrival date. |
|---|---|
| Driving in Uruguay | You can drive on your U.S. license. |
| Entering Argentina (U.S. citizens) | No visa needed for visits of 90 days or less. Passport: must be valid when you enter; leave a blank page for the entry and exit stamps. |
| Driving in Argentina | A valid U.S. license usually works; an International Driving Permit is recommended. |
| Rental car | Cross only if the rental company authorizes it in writing and gives you the papers for the border; ask before you book. |
Sources: U.S. State Department, Uruguay (updated August 13, 2026); U.S. State Department, Argentina (updated July 16, 2026). Checked October 10, 2026; rules change, so confirm before you go.
Driving Luján to Atlántida: the shape of the trip
RN12 (47 mi) and RN14 (37 mi) carry about 23% of the 358 miles. The first 147 miles are in Argentina; the last 211 are in Uruguay. It runs through 7 regions: Buenos Aires, Entre Ríos, Río Negro, Soriano, Colonia, San José, Canelones. Of the 8 stops listed below, 4 are within a mile of the road.
The route from Luján to Atlántida, road by road
| Road | Route miles (from–to) | Length, mi | Region |
|---|---|---|---|
| local roads | 0–1 | 1 | Buenos Aires |
| RP47 | 1–7 | 6 | Buenos Aires |
| connecting roads | 7–8 | 1 | Buenos Aires |
| RP6 | 8–35 | 27 | Buenos Aires |
| RN12 | 35–82 | 47 | Buenos Aires, Entre Ríos |
| RN14 | 82–119 | 37 | Entre Ríos |
| local roads | 119–126 | 7 | Entre Ríos |
| RN136 | 126–145 | 19 | Entre Ríos |
| connecting roads | 145–147 | 2 | Entre Ríos |
| local roads | 147–244 | 97 | Río Negro, Soriano |
| connecting roads | 244–245 | 1 | Soriano |
| local roads | 245–281 | 36 | Colonia, San José |
| connecting roads | 281–284 | 3 | San José |
| local roads | 284–358 | 74 | San José, Canelones |
- Mile 53 of this route: Buenos Aires → Entre Ríos (region line)
- Mile 147 of this route: Entre Ríos → Río Negro (international border)
- Mile 163 of this route: Río Negro → Soriano (region line)
- Mile 245 of this route: Soriano → Colonia (region line)
- Mile 262 of this route: Colonia → San José (region line)
- Mile 306 of this route: San José → Canelones (region line)
What to see on the way from Luján to Atlántida
- Right off the route (under 1 mile): Cathedral of Mercedes (mile 165), Cathedral of San José de Mayo (mile 282), Museo Departamental de San José (mile 282), Cathedral of Our Lady of Guadalupe (mile 316)
- Nature and outdoors: Ciervo de los Pantanos National Park (mile 26)
- Museums and history: Gualeguaychú Cathedral (mile 125), Alejandro Berro Paleontology Museum (mile 162), Cathedral of Mercedes (mile 165), Cathedral of San José de Mayo (mile 282), Museo Departamental de San José (mile 282), Cathedral of Our Lady of Guadalupe (mile 316)
Ciervo de los Pantanos National Park
Ciervo de los Pantanos National Park (Parque Nacional Ciervo de los Pantanos) protects about 2,500 hectares of wetlands in Campana, Buenos Aires province, home to the marsh deer that gives it its name and to abundant waterbirds. It is a Ramsar Site.
Gualeguaychú Cathedral
St. Joseph's Cathedral, also called Gualeguaychú Cathedral, is the mother church of the Roman Catholic Diocese of Gualeguaychú in Argentina.
Frigorífico Anglo del Uruguay
Liebig exported meat extract and corned beef from this spot on the Uruguay River at Fray Bentos starting in 1865. In 1924, the Anglo plant began shipping frozen meat from the same site.
Alejandro Berro Paleontology Museum
In a 19th-century building in Mercedes' Parque Castillo Mauá, this paleontology museum opened in 1946 around the collection of naturalist Alejandro Berro; a well-preserved glyptodon shell found on a nearby riverbank is a highlight.
Cathedral of Mercedes
Since 1960, the Diocese of Mercedes has had its seat at the Cathedral of Our Lady of Mercy, the main Catholic church in this Uruguayan city.
Cathedral of San José de Mayo
The main Catholic church of San José de Mayo, the Cathedral Basilica of St. Joseph has been the diocesan seat since 1955, a minor basilica since 1957 and Uruguay's national shrine of Saint Joseph.
Museo Departamental de San José
Set in central San José de Mayo, the Museo Departamental de San José is a history and fine arts museum that also runs a library, archives and cultural programs.
Cathedral of Our Lady of Guadalupe
Construction of Canelones' Cathedral of Our Lady of Guadalupe began in 1816; the church became a cathedral in 1961 and Uruguay's national shrine of Our Lady of Guadalupe in 2020.
When you get to Atlántida
Iglesia de Cristo Obrero y Nuestra Señora de Lourdes
Engineer Eladio Dieste's Church of Christ the Worker in Estación Atlántida, inaugurated in 1960, joined UNESCO's World Heritage List in 2021. Look for its wavy brick walls and roof, an openwork brick bell tower and an underground baptistery.
Laguna del Cisne
Near Salinas in Canelones, Laguna del Cisne is a subtropical lagoon of about 1.8 km², fed by a watershed of some 50 km², that has supplied drinking water to the Costa de Oro area since 1970.
More drives to Atlántida
- Paysandú to Atlántida
- Tacuarembó to Atlántida
- Rivera to Atlántida
- Artigas to Atlántida
- Bella Unión to Atlántida
- Durazno to Atlántida
More drives from Luján
- Luján to Adrogué
- Luján to Berisso
- Luján to Magdalena
- Luján to Capilla del Monte
- Luján to Villa Carlos Paz
- Luján to Tacuarembó, Uruguay
Frequently asked questions
How long is the drive from Luján to Atlántida, Uruguay?
About 7 h 38 min of driving without stops, over 358 miles.
What is the driving distance from Luján to Atlántida, Uruguay?
About 358 miles (576 km) on the Wayro route. Other map services may show a few miles more or less, depending on where they start and end in each city.
Where does the Luján to Atlántida drive cross the border?
At about mile 147, from Argentina into Uruguay, at the Gualeguaychú–Fray Bentos bridge.
What do U.S. citizens need to drive from Luján into Uruguay?
No visa needed for visits of 90 days or less. Passport: must be valid for 6 months beyond your arrival date. You can drive on your U.S. license. (U.S. State Department, updated August 13, 2026.)
Is it safe to drive from Luján to Atlántida, Uruguay?
The U.S. State Department rates Argentina Level 1: Exercise Normal Precautions; Uruguay Level 2: Exercise Increased Caution. Read the full advisory before you go.
Which highways go from Luján to Atlántida?
In order: RP47, RP6, RN12, RN14 and RN136. The road-by-road table above shows the route miles for each one.
Where can you stop on the way from Luján to Atlántida?
Closest to the road: Cathedral of Mercedes (cathedral, mile 165, 0.7 mi from the route); Museo Departamental de San José (history museum, mile 282, 0.7 mi from the route); Cathedral of Our Lady of Guadalupe (cathedral, mile 316, 0.2 mi from the route). All stops are described above.
How we put this guide together
Wayro calculates the route from OpenStreetMap road data; mile numbers are positions along this route, not highway markers, and "from the route" distances are straight-line, so the real detour depends on access roads. Stops are chosen from parks, natural sites, museums, historic sites and attractions close to the route: at least one strong stop for each stretch of the drive, then the best-known places nearest the road, up to nine in all. Places that are closed, private or not open to visitors are removed. Place descriptions are written by the Wayro team from official park, museum, tourism and government websites and other published sources. Safety levels and entry rules were checked against the U.S. Department of State on October 10, 2026. Conditions change, so check the linked sources before you travel.
Route data © OpenStreetMap contributors.