By road, Formosa, Argentina and Mercedes, Argentina are about 268 miles (431 km) apart, or roughly 5 h 32 min of driving.
Full advisory: Argentina. Advisory issued: Argentina July 10, 2026; checked October 10, 2026.
On the roads, the State Department says:
- Argentina: “Drivers should prepare in advance when taking long road trips and make sure to have adequate insurance coverage.”
| Distance by road | 268 mi (431 km) |
|---|---|
| Drive time without stops | 5 h 32 min |
| Main roads, in order | RN11 → RN16 → RN12 → RN123 |
| Provinces on the route | Formosa, Chaco, Corrientes |
| Fuel estimate (car at 25 mpg) | about 10.7 gal; actual use varies by vehicle and traffic |
| Stops listed below | 4 |
Driving Formosa to Mercedes: the shape of the trip
RN11 (102 mi) and RN12 (99 mi) carry about 75% of the 268 miles. It runs through 3 provinces: Formosa, Chaco, Corrientes. Of the 4 stops listed below, 1 are within a mile of the road.
Which roads connect Formosa and Mercedes
| Road | Route miles (from–to) | Length, mi | Province |
|---|---|---|---|
| local roads | 0–2 | 2 | Formosa |
| RN11 | 2–104 | 102 | Formosa, Chaco |
| RN16 | 104–115 | 11 | Chaco, Corrientes |
| local roads | 115–119 | 4 | Corrientes |
| RN12 | 119–218 | 99 | Corrientes |
| RN123 | 218–265 | 47 | Corrientes |
| local roads | 265–268 | 3 | Corrientes |
- Mile 45 of this route: Formosa → Chaco (province line)
- Mile 114 of this route: Chaco → Corrientes (province line)
Where to stop on the way to Mercedes
- Right off the route (under 1 mile): Corrientes Cathedral (mile 116)
- Nature and outdoors: Iberá National Park (mile 177)
- Museums and history: Museo Ichoalay (mile 104), Resistencia Cathedral (mile 107), Corrientes Cathedral (mile 116)
Museo Ichoalay
Founded in 1949 by two teachers, Museo Ichoalay is a regional history museum in Resistencia, housed in the building of Escuela Normal Superior No. 87.
Resistencia Cathedral
Also called the St. Ferdinand the King Cathedral, Resistencia Cathedral is the Roman Catholic cathedral of the city of Resistencia, Argentina.
Corrientes Cathedral
Corrientes Cathedral, dedicated to Our Lady of the Rosary, is a Roman Catholic church in the city of Corrientes and part of the Archdiocese of Corrientes.
Iberá National Park
In the northeastern province of Corrientes, Iberá National Park borders the 5,530 square-kilometer Iberá Provincial Park to the southeast.
More drives to Mercedes
- Buenos Aires to Mercedes, Argentina
- La Plata to Mercedes, Argentina
- Berisso to Mercedes, Argentina
- Chascomús to Mercedes, Argentina
- Resistencia to Mercedes, Argentina
- Córdoba, Argentina to Mercedes, Argentina
From Formosa to other places in Argentina
Continue Your Adventure
Frequently asked questions
How long is the drive from Formosa, Argentina to Mercedes, Argentina?
About 5 h 32 min of driving without stops, over 268 miles.
How far is Mercedes, Argentina from Formosa, Argentina by car?
About 268 miles (431 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.
What does the U.S. travel advisory say about the Formosa to Mercedes drive?
The U.S. State Department rates Argentina Level 1: Exercise Normal Precautions. Read the full advisory before you go.
What roads does the drive from Formosa to Mercedes use?
In order: RN11, RN16, RN12 and RN123. The road-by-road table above shows the route miles for each one.
Where can you stop on the way from Formosa to Mercedes?
Closest to the road: Museo Ichoalay (museum, mile 104, 3 mi from the route); Resistencia Cathedral (cathedral, mile 107, 3 mi from the route); Corrientes Cathedral (cathedral, mile 116, 0.5 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.