Chascomús to Nueva Helvecia, Uruguay is about 354 road miles (570 km): roughly 7 h 33 min at the wheel if you don't stop. 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: “Illumination, pavement markings, and road surfaces for secondary roads can be poor.”
| Total distance | 354 mi (570 km) |
|---|---|
| Drive time without stops | 7 h 33 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 14.2 gal; actual use varies by vehicle and traffic |
| Stops listed below | 9 |
Getting across the Argentina–Uruguay border
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 Nueva Helvecia drive plays out
RP2 (55 mi) and RN12 (47 mi) carry about 29% of the 354 miles. The first 244 miles are in Argentina; the last 110 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, 6 are within a mile of the road.
Road-by-road breakdown: Chascomús to Nueva Helvecia
| 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 | 244–354 | 110 | Río Negro, 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 324 of this route: Soriano → Colonia (region line)
Places worth a stop between Chascomús and Nueva Helvecia
- Right off the route (under 1 mile): Cathedral of the Most Holy Trinity, Buenos Aires (mile 76), Teatro Ópera (mile 78), Palais de Glace (mile 80), Eduardo Sívori Museum (mile 82), ESMA Museum and Site of Memory – Former Clandestine Center of Detention, Torture and Extermination (mile 86), Cathedral of Mercedes (mile 262)
- Museums and history: Cathedral of the Most Holy Trinity, Buenos Aires (mile 76), Palais de Glace (mile 80), Eduardo Sívori Museum (mile 82), House of Valentín Alsina (mile 84), ESMA Museum and Site of Memory – Former Clandestine Center of Detention, Torture and Extermination (mile 86), Museo Pueyrredon (mile 91), Gualeguaychú Cathedral (mile 221), Cathedral of Mercedes (mile 262)
Cathedral of the Most Holy Trinity, Buenos Aires
Facing Lezama Park in San Telmo, the Russian Orthodox Cathedral of the Most Holy Trinity is an Eastern Orthodox church in Buenos Aires.
Teatro Ópera
Teatro Ópera is a prominent cinema and theater house in Buenos Aires, Argentina, a venue for shows and screenings in the city.
Palais de Glace
At 1430 Posadas Street in Recoleta, Buenos Aires, the Palais de Glace is a Belle Époque building modeled on the Palais des Glaces in Paris.
Eduardo Sívori Museum
Named after painter Eduardo Sívori, this municipal museum of plastic arts in Buenos Aires opened in 1938.
House of Valentín Alsina
In Buenos Aires' Belgrano neighborhood, the House of Valentín Alsina dates from 1856 and was declared a National Historic Monument in 1977; it bears the name of the writer and two-time governor.
ESMA Museum and Site of Memory – Former Clandestine Center of Detention, Torture and Extermination
Set in Buenos Aires on the former Navy Mechanics School grounds, one of the largest clandestine detention, torture and extermination centers of the last dictatorship, this site museum was declared UNESCO World Heritage in 2023.
Museo Pueyrredon
In Acassuso, in the San Isidro district of Buenos Aires Province, this municipal history museum bears the name of Brigadier General Juan Martín de Pueyrredón.
Gualeguaychú Cathedral
St. Joseph's Cathedral, also called Gualeguaychú Cathedral, serves as the cathedral church of the Roman Catholic Diocese of Gualeguaychú in Argentina.
Cathedral of Mercedes
Since 1960, the Diocese of Mercedes has had its seat at the Cathedral of Our Lady of Mercy, the main Catholic church in this Uruguayan city.
More drives to Nueva Helvecia
- Tacuarembó to Nueva Helvecia
- Salto to Nueva Helvecia
- Rivera to Nueva Helvecia
- Artigas to Nueva Helvecia
- Minas to Nueva Helvecia
- Maldonado to Nueva Helvecia
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 does it take to drive from Chascomús to Nueva Helvecia, Uruguay?
About 7 h 33 min of driving without stops, over 354 miles.
What is the driving distance from Chascomús to Nueva Helvecia, Uruguay?
About 354 miles (570 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 Nueva Helvecia 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.)
Is it safe to drive from Chascomús to Nueva Helvecia, 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 Chascomús to Nueva Helvecia 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 Nueva Helvecia?
Closest to the road: Cathedral of the Most Holy Trinity, Buenos Aires (cathedral, mile 76, 0.3 mi from the route); Eduardo Sívori Museum (art museum, mile 82, 0.4 mi from the route); ESMA Museum and Site of Memory – Former Clandestine Center of Detention, Torture and Extermination (museum, mile 86, 0.1 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.