Tandil to Colonia del Sacramento, Uruguay is about 494 road miles (795 km): roughly 10 h 25 min at the wheel if you don't stop. You cross from Argentina into Uruguay at about mile 363, 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: “If you are in an accident involving injury, stay in place until a police officer arrives.”
| Distance | 494 mi (795 km) |
|---|---|
| Driving time, no stops | 10 h 25 min |
| Main roads, in order | RP30 → RN3 → RP6 → RN12 → RN14 → RN136 |
| Border crossing | about mile 363, Argentina → Uruguay (the Gualeguaychú–Fray Bentos bridge) |
| Regions on the route | Buenos Aires, Entre Ríos, Río Negro, Soriano, Colonia |
| Fuel estimate (car at 25 mpg) | about 19.8 gal; actual use varies by vehicle and traffic |
| Stops listed below | 9 |
Border crossing: what to bring for Uruguay
The route crosses at about mile 363, 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 Tandil to Colonia del Sacramento: the shape of the trip
RP30 (93 mi) and RN3 (80 mi) carry about 35% of the 494 miles. The first 363 miles are in Argentina; the last 131 are in Uruguay. It runs through 5 regions: Buenos Aires, Entre Ríos, Río Negro, Soriano, Colonia. Of the 9 stops listed below, 1 are within a mile of the road.
Tandil to Colonia del Sacramento: the road sequence
| Road | Route miles (from–to) | Length, mi | Region |
|---|---|---|---|
| local roads | 0–4 | 4 | Buenos Aires |
| connecting roads | 4–5 | 1 | Buenos Aires |
| RP30 | 5–98 | 93 | Buenos Aires |
| RN3 | 98–178 | 80 | Buenos Aires |
| RP6 | 178–250 | 72 | Buenos Aires |
| RN12 | 250–298 | 48 | Buenos Aires, Entre Ríos |
| RN14 | 298–334 | 36 | Entre Ríos |
| local roads | 334–341 | 7 | Entre Ríos |
| RN136 | 341–360 | 19 | Entre Ríos |
| connecting roads | 360–363 | 3 | Entre Ríos |
| local roads | 363–382 | 19 | Río Negro, Soriano |
| connecting roads | 382–383 | 1 | Soriano |
| local roads | 383–494 | 111 | Soriano, Colonia |
- Mile 268 of this route: Buenos Aires → Entre Ríos (region line)
- Mile 363 of this route: Entre Ríos → Río Negro (international border)
- Mile 378 of this route: Río Negro → Soriano (region line)
- Mile 433 of this route: Soriano → Colonia (region line)
What to see on the way from Tandil to Colonia del Sacramento
- Right off the route (under 1 mile): Museo Municipal Profesor Roselli (mile 432)
- Nature and outdoors: Reserva natural Guardia del Juncal (mile 165), Ciervo de los Pantanos National Park (mile 242), Agraciada Beach (mile 429), Anchorena Presidential Estate (mile 480)
- Museums and history: Alejandro Berro Paleontology Museum (mile 377), Calera Real del Dacá (mile 380), Museo Municipal Profesor Roselli (mile 432), Museo del Carmen (mile 447)
Reserva natural Guardia del Juncal
Guardia del Juncal nature reserve in Cañuelas covers 137 hectares, including a historic estate, the Guardia del Juncal Museum and a natural area; it became a provincial reserve in 2006.
Ciervo de los Pantanos National Park
About 2,500 hectares of wetlands in Campana, Buenos Aires province, are protected as Ciervo de los Pantanos National Park. It's a Ramsar Site and home to the marsh deer and plenty of waterbirds.
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.
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.
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.
Museo Municipal Profesor Roselli
Nueva Palmira's municipal museum, also known as the Museo Roselli, is named for its first director, Professor Francisco Lucas Rosselli.
Teatro Uamá
Teatro Uamá is a theater in the city of Carmelo, in Uruguay's Colonia department, regarded as the town's leading cultural institution.
Museo del Carmen
Facing Plaza Artigas in Carmelo, the Archivo y Museo del Carmen belongs to the local Carmelo parish and holds religious and historical collections.
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.
Arriving in Colonia del Sacramento
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.
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.
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 Tandil
- Tandil to Tigre
- Tandil to Salto, Uruguay
- Tandil to Tacuarembó, Uruguay
- Tandil to Mercedes, Uruguay
- Tandil to Florida, Uruguay
- Tandil to Fray Bentos, Uruguay
Frequently asked questions
How long does it take to drive from Tandil to Colonia del Sacramento, Uruguay?
About 10 h 25 min of driving without stops, over 494 miles.
What is the driving distance from Tandil to Colonia del Sacramento, Uruguay?
About 494 miles (795 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 Tandil to Colonia del Sacramento drive cross the border?
At about mile 363, from Argentina into Uruguay, at the Gualeguaychú–Fray Bentos bridge.
What do U.S. citizens need to drive from Tandil 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 Tandil 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.
Which highways go from Tandil to Colonia del Sacramento?
In order: RP30, RN3, RP6, RN12, RN14 and RN136. The road-by-road table above shows the route miles for each one.
What are good stops between Tandil and Colonia del Sacramento?
Closest to the road: Museo Municipal Profesor Roselli (museum, mile 432, 0.7 mi from the route); Teatro Uamá (theater, mile 447, 1 mi from the route); Museo del Carmen (private museum, mile 447, 1 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.