By road, Chascomús and Colonia del Sacramento, Uruguay are about 375 miles (604 km) apart, or roughly 8 h 3 min of driving. You cross from Argentina into Uruguay at about mile 244, 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.”
| Total distance | 375 mi (604 km) |
|---|---|
| Driving time, no stops | 8 h 3 min |
| Main roads, in order | RP2 → RN1 → AV1-N → RN9 → RP6 → RN12 → RN14 → RN136 |
| Border crossing | about mile 244, Argentina → Uruguay (the Gualeguaychú–Fray Bentos bridge) |
| Regions on the route | Buenos Aires, Ciudad de Buenos Aires, Entre Ríos, Río Negro, Soriano, Colonia |
| Fuel estimate (car at 25 mpg) | about 15.0 gal; actual use varies by vehicle and traffic |
| Stops listed below | 9 |
The border on the way to Colonia del Sacramento
The route crosses at about mile 244, 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.
How the Chascomús to Colonia del Sacramento drive plays out
RP2 (55 mi) and RN12 (47 mi) carry about 27% of the 375 miles. The first 244 miles are in Argentina; the last 131 are in Uruguay. It runs through 6 regions: Buenos Aires, Ciudad de Buenos Aires, Entre Ríos, Río Negro, Soriano, Colonia. Of the 9 stops listed below, 5 are within a mile of the road.
Which roads connect Chascomús and Colonia del Sacramento
| Road | Route miles (from–to) | Length, mi | Region |
|---|---|---|---|
| local roads | 0–4 | 4 | Buenos Aires |
| RP2 | 4–59 | 55 | Buenos Aires |
| connecting roads | 59–60 | 1 | Buenos Aires |
| RN1 | 60–76 | 16 | Buenos Aires, Ciudad de Buenos Aires |
| local roads | 76–80 | 4 | Ciudad de Buenos Aires |
| AV1-N | 80–85 | 5 | Ciudad de Buenos Aires |
| connecting roads | 85–88 | 3 | Ciudad de Buenos Aires |
| RN9 | 88–127 | 39 | Buenos Aires |
| RP6 | 127–132 | 5 | Buenos Aires |
| RN12 | 132–179 | 47 | Buenos Aires, Entre Ríos |
| RN14 | 179–216 | 37 | Entre Ríos |
| local roads | 216–222 | 6 | Entre Ríos |
| RN136 | 222–241 | 19 | Entre Ríos |
| connecting roads | 241–244 | 3 | Entre Ríos |
| local roads | 244–263 | 19 | Río Negro, Soriano |
| connecting roads | 263–265 | 2 | Soriano |
| local roads | 265–375 | 110 | Soriano, Colonia |
- Mile 72 of this route: Buenos Aires → Ciudad de Buenos Aires (region line)
- Mile 88 of this route: Ciudad de Buenos Aires → Buenos Aires (region line)
- Mile 150 of this route: Buenos Aires → Entre Ríos (region line)
- Mile 244 of this route: Entre Ríos → Río Negro (international border)
- Mile 260 of this route: Río Negro → Soriano (region line)
- Mile 314 of this route: Soriano → Colonia (region line)
Stops between Chascomús and Colonia del Sacramento
- Right off the route (under 1 mile): Buenos Aires Museum of Modern Art (mile 76), San Nicolás de Bari Basilica, Buenos Aires (mile 79), Floralis Genérica (mile 80), Parque de la Memoria (mile 84), Cathedral of Mercedes (mile 262)
- Nature and outdoors: Parque de la Memoria (mile 84), Agraciada Beach (mile 311), Anchorena Presidential Estate (mile 360)
- Museums and history: Buenos Aires Museum of Modern Art (mile 76), San Nicolás de Bari Basilica, Buenos Aires (mile 79), Museo Casa de Rogelio Yrurtia (mile 85), Cathedral of Mercedes (mile 262)
Buenos Aires Museum of Modern Art
Known locally as the Museo de Arte Moderno de Buenos Aires, this modern art museum is in the San Telmo district of Buenos Aires.
San Nicolás de Bari Basilica, Buenos Aires
Built in the French academic style, this Buenos Aires basilica honors Saint Nicholas of Bari; the original 1733 chapel on Corrientes was demolished in 1931 to widen Diagonal Norte.
Floralis Genérica
Floralis Genérica is a steel and aluminum flower sculpture in United Nations Square in Buenos Aires, created in 2002 and given to the city by architect Eduardo Catalano.
Parque de la Memoria
Facing the Río de la Plata at the northern end of Buenos Aires' Belgrano section, Parque de la Memoria is a public memorial to the victims of Argentina's 1976–1983 military regime.
Museo Casa de Rogelio Yrurtia
Sculptor Rogelio Yrurtia once lived in this house in the Belgrano district of Buenos Aires, which now operates as a museum dedicated to him.
Frigorífico Anglo del Uruguay
Part of a UNESCO World Heritage landscape inscribed in 2015, the old Anglo meatpacking plant stands on the Uruguay River at Fray Bentos, where frozen meat shipments began in 1924.
Cathedral of Mercedes
Mercedes, Uruguay, centers its Catholic life on the Cathedral of Our Lady of Mercy, which became the seat of the local diocese in 1960.
Agraciada Beach
On the eastern bank of the Uruguay River in Soriano department, Agraciada Beach is a historic beach area facing Argentina's Entre Ríos province.
Anchorena Presidential Estate
Located in Colonia Department, 208 km from Montevideo, the Anchorena Presidential Estate is a national park that also serves as a rest residence for Uruguay's president.
In Colonia del Sacramento itself
Museo del Origami
Set in the historic district of Colonia del Sacramento, Museo del Origami is a nonprofit museum devoted to the art of paper folding and part of Uruguay's national museum system.
Basílica del Santísimo Sacramento, Colonia del Sacramento
In Colonia del Sacramento, Uruguay, the Basílica del Santísimo Sacramento (Basilica of the Holy Sacrament) is a Roman Catholic parish church you can stop at in town.
Museo Paleontológico Profesor Armando Calcaterra
In the Real de San Carlos area of Colonia del Sacramento, Museo Paleontológico Profesor Armando Calcaterra shows about 1,600 pieces, including fossil vertebrates and invertebrates and Indigenous artifacts.
More drives to Colonia del Sacramento
- Mercedes, Uruguay to Colonia del Sacramento
- Paysandú to Colonia del Sacramento
- Tacuarembó to Colonia del Sacramento
- Salto to Colonia del Sacramento
- Rivera to Colonia del Sacramento
- Artigas to Colonia del Sacramento
More drives from Chascomús
- Chascomús to Tigre
- Chascomús to San Antonio de Areco
- Chascomús to Arrecifes
- Chascomús to Martínez
- Chascomús to Mercedes, Argentina
- Chascomús to Artigas, Uruguay
Frequently asked questions
How long is the drive from Chascomús to Colonia del Sacramento, Uruguay?
About 8 h 3 min of driving without stops, over 375 miles.
How far is Colonia del Sacramento, Uruguay from Chascomús by car?
About 375 miles (604 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 Chascomús to Colonia del Sacramento drive cross the border?
At about mile 244, from Argentina into Uruguay, at the Gualeguaychú–Fray Bentos bridge.
What do U.S. citizens need to drive from Chascomús 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.)
What does the U.S. travel advisory say about the Chascomús to Colonia del Sacramento drive?
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 Chascomús to Colonia del Sacramento use?
In order: RP2, RN1, AV1-N, RN9, 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 Chascomús to Colonia del Sacramento?
Closest to the road: Buenos Aires Museum of Modern Art (museum of modern art, mile 76, 0.4 mi from the route); Floralis Genérica (sculpture, mile 80, 0.4 mi from the route); Parque de la Memoria (memorial park, mile 84, 0.4 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.