The Wayro route from San Miguel de Tucumán to Villa Unión is 407 miles (655 km), about 8 h 8 min of driving without stops.
Full advisory: Argentina. Advisory issued: Argentina July 10, 2026; checked October 10, 2026.
On the roads, the State Department says:
- Argentina: “Gas stations are often far apart and not always easily identified from the main roadway.”
| Distance | 407 mi (655 km) |
|---|---|
| Time at the wheel, no stops | 8 h 8 min |
| Main roads, in order | RN38 → RN1V38 → RN150 → RN76 |
| Provinces on the route | Tucumán, Catamarca, La Rioja |
| Fuel estimate (car at 25 mpg) | about 16.3 gal; actual use varies by vehicle and traffic |
| Stops listed below | 5 |
The San Miguel de Tucumán–Villa Unión drive in a few lines
RN38 (229 mi) and RN76 (72 mi) carry about 74% of the 407 miles. It runs through 3 provinces: Tucumán, Catamarca, La Rioja. Of the 5 stops listed below, 1 are within a mile of the road.
Which roads connect San Miguel de Tucumán and Villa Unión
| Road | Route miles (from–to) | Length, mi | Province |
|---|---|---|---|
| local roads | 0–4 | 4 | Tucumán |
| connecting roads | 4–6 | 2 | Tucumán |
| RN38 | 6–22 | 16 | Tucumán |
| RN1V38 | 22–66 | 44 | Tucumán |
| RN38 | 66–279 | 213 | Tucumán, Catamarca, La Rioja |
| RN150 | 279–332 | 53 | La Rioja |
| RN76 | 332–404 | 72 | La Rioja |
| local roads | 404–407 | 3 | La Rioja |
- Mile 97 of this route: Tucumán → Catamarca (province line)
- Mile 186 of this route: Catamarca → La Rioja (province line)
Breaking up the drive: stops between San Miguel de Tucumán and Villa Unión
- Right off the route (under 1 mile): El Chiflón (mile 324)
- Nature and outdoors: El Chiflón (mile 324), Talampaya National Park (mile 358)
- Museums and history: San Fernando del Valle de Catamarca Cathedral (mile 141), Archaeological Museum Adam Quiroga (mile 141), Museo Arqueológico Regional Inca Huasi (mile 235)
San Fernando del Valle de Catamarca Cathedral
Dedicated to the Virgen del Valle, the Cathedral Basilica of Our Lady of the Valley stands in San Fernando del Valle de Catamarca.
Archaeological Museum Adam Quiroga
The Archaeological Museum Adam Quiroga (Museo Arqueológico Adán Quiroga) safeguards what is considered the most important collection of archaeological pieces in Catamarca province.
Museo Arqueológico Regional Inca Huasi
The Inca Huasi Regional Archaeological Museum, in the city of La Rioja, is devoted to the archaeology of northwestern Argentina.
El Chiflón
On National Route 150, about 70 km west of Patquía, El Chiflón Provincial Park belongs to the Talampaya–Ischigualasto geological basin and shares its landscape, geology and cultural features with those parks.
Talampaya National Park
Talampaya National Park in La Rioja Province became a provincial reserve in 1975, a national park in 1997 and a UNESCO World Heritage Site in 2000.
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
- Amaicha del Valle to Villa Unión
From San Miguel de Tucumán to other places in Argentina
- San Miguel de Tucumán to San Agustín de Valle Fértil
- San Miguel de Tucumán to Río Cuarto
- San Miguel de Tucumán to Paraná
- San Miguel de Tucumán to Amaicha del Valle
- San Miguel de Tucumán to Cafayate
- San Miguel de Tucumán to San Antonio de los Cobres
Frequently asked questions
How long does it take to drive from San Miguel de Tucumán to Villa Unión?
About 8 h 8 min of driving without stops, over 407 miles.
What is the driving distance from San Miguel de Tucumán to Villa Unión?
About 407 miles (655 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 San Miguel de Tucumán to Villa Unión 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 San Miguel de Tucumán to Villa Unión use?
In order: RN38, RN1V38, RN150 and RN76. The road-by-road table above shows the route miles for each one.
Where can you stop on the way from San Miguel de Tucumán to Villa Unión?
Closest to the road: San Fernando del Valle de Catamarca Cathedral (basilica, mile 141, 2 mi from the route); Archaeological Museum Adam Quiroga (ethnographic museum, mile 141, 2 mi from the route); El Chiflón (park, mile 324, 0.2 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.