Adrogué to Cabo Polonio, Uruguay is about 535 road miles (861 km): roughly 11 h 56 min at the wheel if you don't stop. You cross from Argentina into Uruguay at about mile 180, 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 by road | 535 mi (861 km) |
|---|---|
| Time at the wheel, no stops | 11 h 56 min |
| Main roads, in order | 063-01 → RNA001 → RN9 → RP6 → RN12 → RN14 → RN136 → I-B |
| Border crossing | about mile 180, Argentina → Uruguay (the Gualeguaychú–Fray Bentos bridge) |
| Regions on the route | Buenos Aires, Ciudad de Buenos Aires, Entre Ríos, Río Negro, Soriano, Colonia, San José, Canelones, Maldonado, Rocha |
| Fuel estimate (car at 25 mpg) | about 21.4 gal; actual use varies by vehicle and traffic |
| Stops listed below | 8 |
The border on the way to Cabo Polonio
The route crosses at about mile 180, 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 Adrogué to Cabo Polonio is like
RN12 (47 mi) and RN9 (39 mi) carry about 16% of the 535 miles. The first 180 miles are in Argentina; the last 355 are in Uruguay. It runs through 10 regions: Buenos Aires, Ciudad de Buenos Aires, Entre Ríos, Río Negro, Soriano, Colonia, San José, Canelones, Maldonado, Rocha. Of the 8 stops listed below, 2 are within a mile of the road.
Road-by-road breakdown: Adrogué to Cabo Polonio
| Road | Route miles (from–to) | Length, mi | Region |
|---|---|---|---|
| local roads | 0–5 | 5 | Buenos Aires |
| 063-01 | 5–10 | 5 | Buenos Aires, Ciudad de Buenos Aires |
| RNA001 | 10–23 | 13 | Ciudad de Buenos Aires |
| connecting roads | 23–24 | 1 | Ciudad de Buenos Aires |
| RN9 | 24–63 | 39 | Buenos Aires |
| RP6 | 63–68 | 5 | Buenos Aires |
| RN12 | 68–115 | 47 | Buenos Aires, Entre Ríos |
| RN14 | 115–152 | 37 | Entre Ríos |
| local roads | 152–158 | 6 | Entre Ríos |
| RN136 | 158–177 | 19 | Entre Ríos |
| connecting roads | 177–180 | 3 | Entre Ríos |
| local roads | 180–314 | 134 | Río Negro, Soriano, Colonia, San José |
| connecting roads | 314–316 | 2 | San José |
| local roads | 316–413 | 97 | San José, Canelones, Maldonado |
| I-B | 413–418 | 5 | Maldonado |
| connecting roads | 418–419 | 1 | Maldonado |
| local roads | 419–535 | 116 | Maldonado, Rocha |
- Mile 6 of this route: Buenos Aires → Ciudad de Buenos Aires (region line)
- Mile 24 of this route: Ciudad de Buenos Aires → Buenos Aires (region line)
- Mile 85 of this route: Buenos Aires → Entre Ríos (region line)
- Mile 180 of this route: Entre Ríos → Río Negro (international border)
- Mile 196 of this route: Río Negro → Soriano (region line)
- Mile 277 of this route: Soriano → Colonia (region line)
- Mile 295 of this route: Colonia → San José (region line)
- Mile 339 of this route: San José → Canelones (region line)
- Mile 408 of this route: Canelones → Maldonado (region line)
- Mile 465 of this route: Maldonado → Rocha (region line)
Where to stop on the way to Cabo Polonio
- Right off the route (under 1 mile): Cathedral of Mercedes (mile 198), Cathedral of Our Lady of Guadalupe (mile 349)
- Nature and outdoors: Cerro Pan de Azúcar Native Wildlife Breeding Station (mile 419), La Sirena Beach (mile 524)
- Museums and history: Museo de Arte Español Enrique Larreta (mile 23), Gualeguaychú Cathedral (mile 157), Cathedral of Mercedes (mile 198), Cathedral of Our Lady of Guadalupe (mile 349), Iglesia de Cristo Obrero y Nuestra Señora de Lourdes (mile 385)
Torre Espacial
Rising 200 meters in Buenos Aires' Villa Soldati section, Torre Espacial (also called Torre Interama) is an observation tower built between 1980 and 1981 for the Parque de la Ciudad amusement park.
Museo de Arte Español Enrique Larreta
In Buenos Aires's Belgrano neighborhood, the Enrique Larreta Museum is devoted to Spanish art.
Gualeguaychú Cathedral
In Gualeguaychú, Argentina, the Roman Catholic diocese has its cathedral church at St. Joseph's, also known as Gualeguaychú Cathedral.
Cathedral of Mercedes
Dedicated to Our Lady of Mercy, this cathedral is the main Catholic church of Mercedes, Uruguay, and has been the seat of the Diocese of Mercedes since 1960.
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.
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.
Cerro Pan de Azúcar Native Wildlife Breeding Station
Near Piriápolis in Maldonado, this breeding station for native wildlife on Cerro Pan de Azúcar is surrounded by native vegetation and offers guided visits, including a native wildlife trail and a path up the hill.
La Sirena Beach
About 2.5 km north of Aguas Dulces, La Sirena is one of Uruguay's two official naturist beaches, backed by vegetated dunes, small marshes, lagoons and pine and acacia woods where coastal birds are common.
In Cabo Polonio itself
Parque nacional Cabo Polonio
Part of Uruguay's national protected areas system since 2009, Cabo Polonio National Park spans 25,820 hectares of coastline, ocean and offshore islands.
Cabo Polonio Lighthouse
Standing on the Cabo Polonio headland in Uruguay's Rocha department, this lighthouse looks out over the Atlantic Ocean and was built in 1881.
Dunes of Cabo Polonio
Inside Cabo Polonio National Park in Uruguay's Rocha department, a band of natural sand dunes runs along the Atlantic Ocean.
More drives to Cabo Polonio
- Mercedes, Uruguay to Cabo Polonio
- Rivera to Cabo Polonio
- Paysandú to Cabo Polonio
- Salto to Cabo Polonio
- Bella Unión to Cabo Polonio
- Durazno to Cabo Polonio
More drives from Adrogué
- Adrogué to Magdalena
- Adrogué to San Antonio de Areco
- Adrogué to Arrecifes
- Adrogué to Capilla del Monte
- Adrogué to Rocha, Uruguay
- Adrogué to Fray Bentos, Uruguay
Frequently asked questions
How long does it take to drive from Adrogué to Cabo Polonio, Uruguay?
About 11 h 56 min of driving without stops, over 535 miles.
What is the driving distance from Adrogué to Cabo Polonio, Uruguay?
About 535 miles (861 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 Adrogué to Cabo Polonio drive cross the border?
At about mile 180, from Argentina into Uruguay, at the Gualeguaychú–Fray Bentos bridge.
What do U.S. citizens need to drive from Adrogué 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 Adrogué to Cabo Polonio, 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.
What roads does the drive from Adrogué to Cabo Polonio use?
In order: 063-01, RNA001, RN9, RP6, RN12, RN14, RN136 and I-B. The road-by-road table above shows the route miles for each one.
What are good stops between Adrogué and Cabo Polonio?
Closest to the road: Gualeguaychú Cathedral (cathedral, mile 157, 1 mi from the route); Cathedral of Mercedes (cathedral, mile 198, 0.7 mi from the route); Cathedral of Our Lady of Guadalupe (cathedral, mile 349, 0.0 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.