Plan on about 11 h 28 min of driving for the 481-mile (774 km) trip from San Lorenzo to Villa Unión, before any stops.
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 | 481 mi (774 km) |
|---|---|
| Drive time without stops | 11 h 28 min |
| Main roads, in order | RN68 → RN40 → RP39 |
| Provinces on the route | Salta, Tucumán, Catamarca, La Rioja |
| Fuel estimate (car at 25 mpg) | about 19.2 gal; actual use varies by vehicle and traffic |
| Stops listed below | 6 |
The San Lorenzo–Villa Unión drive in a few lines
RN40 (345 mi) and RN68 (106 mi) carry about 94% of the 481 miles. It runs through 4 provinces: Salta, Tucumán, Catamarca, La Rioja. Of the 6 stops listed below, 3 are within a mile of the road.
The route from San Lorenzo to Villa Unión, road by road
| Road | Route miles (from–to) | Length, mi | Province |
|---|---|---|---|
| local roads | 0–13 | 13 | Salta |
| connecting roads | 13–15 | 2 | Salta |
| RN68 | 15–121 | 106 | Salta |
| RN40 | 121–169 | 48 | Salta, Tucumán, Catamarca |
| RP39 | 169–179 | 10 | Catamarca |
| RN40 | 179–476 | 297 | Catamarca, La Rioja |
| local roads | 476–481 | 5 | La Rioja |
- Mile 137 of this route: Salta → Tucumán (province line)
- Mile 161 of this route: Tucumán → Catamarca (province line)
- Mile 331 of this route: Catamarca → La Rioja (province line)
What to see on the way from San Lorenzo to Villa Unión
- Right off the route (under 1 mile): Our Lady of Rosary Cathedral, Cafayate (mile 122), Museo de la Vid y el Vino (mile 123), Chirau Mita Botanical Garden (mile 409)
- Nature and outdoors: Chirau Mita Botanical Garden (mile 409)
- Museums and history: Our Lady of Rosary Cathedral, Cafayate (mile 122), Museo de la Vid y el Vino (mile 123), Ruins of Quilmes (mile 153), Sitio arqueológico de Hualco (mile 345), Nocenta Pisetta Museum (mile 412)
Our Lady of Rosary Cathedral, Cafayate
In the town of Cafayate, Salta Province, Our Lady of Rosary Cathedral is the seat of the Catholic bishopric of Cafayate, under the Archdiocese of Salta.
Museo de la Vid y el Vino
In Cafayate, Salta Province, the Museo de la Vid y el Vino is a museum devoted to grapevines and winemaking.
Ruins of Quilmes
In the Calchaquí Valleys of Tucumán Province, the Ruins of Quilmes mark a pre-Columbian settlement that covered about 74 acres, the largest in the country.
Sitio arqueológico de Hualco
Near Schaqui in La Rioja Province, the Hualco archaeological site sits atop a ravine and has about 150 of an estimated 300 enclosures of a citadel built for housing and defense.
Chirau Mita Botanical Garden
Chirau Mita is a botanical garden gathering more than 1,200 cactus species from around the world, plus agave, aloe vera and other dry-climate plants.
Nocenta Pisetta Museum
Named for Italian sculptor Inocenta Turra de Pisetta, who settled in Chilecito, La Rioja, the Nocenta Pisetta Museum displays clay figures.
More drives to Villa Unión
- Capilla del Monte to Villa Unión
- Maipú to Villa Unión
- Córdoba, Argentina to Villa Unión
- Río Cuarto to Villa Unión
- Catamarca to Villa Unión
- San Miguel de Tucumán to Villa Unión
From San Lorenzo to other places in Argentina
Frequently asked questions
How long does it take to drive from San Lorenzo to Villa Unión?
About 11 h 28 min of driving without stops, over 481 miles.
How far is Villa Unión from San Lorenzo by car?
About 481 miles (774 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.
Is it safe to drive from San Lorenzo to Villa Unión?
The U.S. State Department rates Argentina Level 1: Exercise Normal Precautions. Read the full advisory before you go.
Which highways go from San Lorenzo to Villa Unión?
In order: RN68, RN40 and RP39. The road-by-road table above shows the route miles for each one.
Where can you stop on the way from San Lorenzo to Villa Unión?
Closest to the road: Our Lady of Rosary Cathedral, Cafayate (cathedral, mile 122, 0.1 mi from the route); Museo de la Vid y el Vino (museum, mile 123, 0.3 mi from the route); Chirau Mita Botanical Garden (botanical garden, mile 409, 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.