The Wayro route from Mar del Plata to Conchillas, Uruguay is 528 miles (849 km), about 10 h 43 min of driving without stops. You cross from Argentina into Uruguay at about mile 421, 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.”
| Total distance | 528 mi (849 km) |
|---|---|
| Driving time, no stops | 10 h 43 min |
| Main roads, in order | RP2 → RN1 → AV1-N → RN9 → RP6 → RN12 → RN14 → RN136 |
| Border crossing | about mile 421, 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 21.1 gal; actual use varies by vehicle and traffic |
| Stops listed below | 9 |
Crossing from Argentina into Uruguay
The route crosses at about mile 421, 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 Mar del Plata to Conchillas is like
RP2 (234 mi) and RN12 (48 mi) carry about 53% of the 528 miles. The first 421 miles are in Argentina; the last 107 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, 4 are within a mile of the road.
Road-by-road breakdown: Mar del Plata to Conchillas
| Road | Route miles (from–to) | Length, mi | Region |
|---|---|---|---|
| local roads | 0–2 | 2 | Buenos Aires |
| RP2 | 2–236 | 234 | Buenos Aires |
| connecting roads | 236–237 | 1 | Buenos Aires |
| RN1 | 237–254 | 17 | Buenos Aires, Ciudad de Buenos Aires |
| local roads | 254–257 | 3 | Ciudad de Buenos Aires |
| AV1-N | 257–263 | 6 | Ciudad de Buenos Aires |
| connecting roads | 263–265 | 2 | Ciudad de Buenos Aires |
| RN9 | 265–304 | 39 | Ciudad de Buenos Aires, Buenos Aires |
| connecting roads | 304–305 | 1 | Buenos Aires |
| RP6 | 305–309 | 4 | Buenos Aires |
| RN12 | 309–357 | 48 | Buenos Aires, Entre Ríos |
| RN14 | 357–393 | 36 | Entre Ríos |
| local roads | 393–400 | 7 | Entre Ríos |
| RN136 | 400–419 | 19 | Entre Ríos |
| connecting roads | 419–421 | 2 | Entre Ríos |
| local roads | 421–440 | 19 | Río Negro, Soriano |
| connecting roads | 440–442 | 2 | Soriano |
| local roads | 442–528 | 86 | Soriano, Colonia |
- Mile 250 of this route: Buenos Aires → Ciudad de Buenos Aires (region line)
- Mile 266 of this route: Ciudad de Buenos Aires → Buenos Aires (region line)
- Mile 327 of this route: Buenos Aires → Entre Ríos (region line)
- Mile 421 of this route: Entre Ríos → Río Negro (international border)
- Mile 437 of this route: Río Negro → Soriano (region line)
- Mile 492 of this route: Soriano → Colonia (region line)
Places worth a stop between Mar del Plata and Conchillas
- Right off the route (under 1 mile): Museo del Cine Pablo Ducrós Hicken (mile 254), Museo Banco Provincia (mile 256), San Nicolás de Bari Basilica, Buenos Aires (mile 257), Museo Municipal Profesor Roselli (mile 492)
- Nature and outdoors: Ciervo de los Pantanos National Park (mile 297), Agraciada Beach (mile 488)
- Museums and history: Museo del Cine Pablo Ducrós Hicken (mile 254), Museo Banco Provincia (mile 256), San Nicolás de Bari Basilica, Buenos Aires (mile 257), Gualeguaychú Cathedral (mile 399), Museo Municipal Profesor Roselli (mile 492)
Museo del Cine Pablo Ducrós Hicken
Established in 1971, Museo del Cine Pablo Ducrós Hicken in Buenos Aires traces Argentine cinema through about 90,000 film reels plus photos, posters, scripts, costumes and film equipment.
Museo Banco Provincia
The Banco Provincia Museum is at Sarmiento 364 in Buenos Aires's microcentro, an area full of banks and financial institutions.
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.
Monument to Giuseppe Garibaldi
An equestrian statue of Italian military and political figure Giuseppe Garibaldi, this monument stands on Plaza Italia in the Palermo neighborhood of Buenos Aires.
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.
Gualeguaychú Cathedral
St. Joseph's Cathedral, also called Gualeguaychú Cathedral, serves as the cathedral 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.
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.
More drives to Conchillas
- Tacuarembó to Conchillas
- Artigas to Conchillas
- Veinticinco de Agosto to Conchillas
- Fray Marcos to Conchillas
- Minas to Conchillas
- Alejandro Gallinal to Conchillas
More drives from Mar del Plata
- Mar del Plata to Viedma
- Mar del Plata to Adrogué
- Mar del Plata to Tigre
- Mar del Plata to San Antonio de Areco
- Mar del Plata to Arrecifes
- Mar del Plata to Pergamino
Continue Your Adventure
Frequently asked questions
How long is the drive from Mar del Plata to Conchillas, Uruguay?
About 10 h 43 min of driving without stops, over 528 miles.
How far is Conchillas, Uruguay from Mar del Plata by car?
About 528 miles (849 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 Mar del Plata to Conchillas drive cross the border?
At about mile 421, from Argentina into Uruguay, at the Gualeguaychú–Fray Bentos bridge.
What do U.S. citizens need to drive from Mar del Plata 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 Mar del Plata to Conchillas, 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 Mar del Plata to Conchillas?
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 Mar del Plata to Conchillas?
Closest to the road: Museo del Cine Pablo Ducrós Hicken (film museum, mile 254, 0.2 mi from the route); Museo Banco Provincia (museum, mile 256, 0.4 mi from the route); San Nicolás de Bari Basilica, Buenos Aires (basilica, mile 257, 0.7 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.