By road, Luján and Treinta y Tres, Uruguay are about 499 miles (803 km) apart, or roughly 10 h 36 min of driving. 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: “Several of the main highways are particularly accident-ridden.”
| Distance by road | 499 mi (803 km) |
|---|---|
| Time at the wheel, no stops | 10 h 36 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, Lavalleja, Treinta y Tres |
| Fuel estimate (car at 25 mpg) | about 20.0 gal; actual use varies by vehicle and traffic |
| Stops listed below | 8 |
Border crossing: what to bring for Uruguay
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.
What the drive from Luján to Treinta y Tres is like
RN12 (47 mi) and RN14 (37 mi) carry about 17% of the 499 miles. The first 147 miles are in Argentina; the last 352 are in Uruguay. It runs through 9 regions: Buenos Aires, Entre Ríos, Río Negro, Soriano, Colonia, San José, Canelones, Lavalleja, Treinta y Tres. Of the 8 stops listed below, 2 are within a mile of the road.
Luján to Treinta y Tres: the road sequence
| 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 | 284–351 | 67 | San José, Canelones |
| connecting roads | 351–352 | 1 | Canelones |
| local roads | 352–499 | 147 | Canelones, Lavalleja, Treinta y Tres |
- 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)
- Mile 372 of this route: Canelones → Lavalleja (region line)
- Mile 482 of this route: Lavalleja → Treinta y Tres (region line)
Stops between Luján and Treinta y Tres
- Right off the route (under 1 mile): Cathedral of Our Lady of Guadalupe (mile 316), Cathedral of Minas (mile 396)
- Nature and outdoors: Ciervo de los Pantanos National Park (mile 26), Laguna del Cisne (mile 352), Parque nacional Arequita (mile 397), Salto del Penitente (mile 406)
- Museums and history: Calera Real del Dacá (mile 165), Cathedral of Our Lady of Guadalupe (mile 316), Iglesia de Cristo Obrero y Nuestra Señora de Lourdes (mile 352), Cathedral of Minas (mile 396)
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.
Calera Real del Dacá
On the eastern edge of Mercedes beside the Dacá stream, the ruins of the Calera Real lime works date to 1722 and are considered the region's first industrial site; recent works added visitor circuits, lighting and interpretive signs.
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.
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.
Iglesia de Cristo Obrero y Nuestra Señora de Lourdes
Wavy brick walls and a rippling brick roof define this church in Estación Atlántida, along with an openwork brick bell tower and a baptistery set underground. Engineer Eladio Dieste designed it, and it opened in 1960.
Cathedral of Minas
Minas's main Catholic church, the Cathedral of the Immaculate Conception served as the seat of the Diocese of Minas from 1960 to 2020.
Parque nacional Arequita
Arequita National Park is a protected natural area in Lavalleja department, southeastern Uruguay, known for Cerro Arequita, its related rock formations and its biodiversity.
Salto del Penitente
In Treinta y Tres itself
Museo Agustín Araújo
Treinta y Tres's departmental fine arts museum, the Museo Agustín Araújo is a public museum in the city of Treinta y Tres, Uruguay.
More drives to Treinta y Tres
- Montevideo to Treinta y Tres
- Rivera to Treinta y Tres
- Colonia del Sacramento to Treinta y Tres
- Salto to Treinta y Tres
- Fray Bentos to Treinta y Tres
- Buenos Aires to Treinta y Tres, Uruguay
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
Continue Your Adventure
Frequently asked questions
How long does it take to drive from Luján to Treinta y Tres, Uruguay?
About 10 h 36 min of driving without stops, over 499 miles.
How far is Treinta y Tres, Uruguay from Luján by car?
About 499 miles (803 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 Treinta y Tres 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 Treinta y Tres, 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 Treinta y Tres?
In order: RP47, RP6, RN12, RN14 and RN136. The road-by-road table above shows the route miles for each one.
What are good stops between Luján and Treinta y Tres?
Closest to the road: Calera Real del Dacá (ruins, mile 165, 2 mi from the route); Cathedral of Our Lady of Guadalupe (cathedral, mile 316, 0.2 mi from the route); Cathedral of Minas (cathedral, mile 396, 0.6 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.