The Wayro route from Comfort to Piedras Negras is 160 miles (258 km), about 3 h 39 min of driving without stops. The U.S.–Mexico border is at about mile 158 on this route, near the Eagle Pass port of entry.
| Distance | 160 mi (258 km) |
|---|---|
| Driving time, no stops | 3 h 39 min |
| Main roads, in order | TX 27 → RM 480 → TX 173 → US-90 → FM 481 → US-57 |
| Border crossing | about mile 158 of this route, Texas → Coahuila (near the Eagle Pass, TX port of entry) |
| Mexican states on the route | Coahuila (Level 3) |
| Fuel estimate (car at 25 mpg) | about 6.4 gal; actual use varies by vehicle and traffic |
| Stops listed below | 2 |
Crossing into Mexico: what you need for Piedras Negras
| Passport | Passport book or passport card to enter Mexico by land |
|---|---|
| FMM entry permit | Not needed if you stay within 12 miles (20 km) of the border for 6 days or less; required for longer stays or if you travel farther in |
| Temporary vehicle import permit (TIP) | Not needed inside the border zone; required if you drive farther into Mexico |
| Mexican auto insurance | Required for all vehicles: buy a Mexican policy before you cross |
Sources: U.S. State Department, Mexico travel information (updated August 11, 2026); permits are issued by Banjercito.
Crossing at Eagle Pass
Eagle Pass has two city-run bridges to Piedras Negras, Coahuila. Bridge I downtown serves pedestrians, cars and buses, while the Camino Real International Bridge adds commercial trucks, a SENTRI lane and direct access to Mexico's highway south toward Mexico City.
What the drive from Comfort to Piedras Negras is like
US-90 (45 mi) and FM 481 (43 mi) carry about 55% of the 160 miles. The U.S. part of the drive runs through Texas for about 158 miles; after the border at Eagle Pass you have about 2 miles left in Mexico. Of the 2 stops listed below, 1 are within a mile of the road.
The route from Comfort to Piedras Negras, road by road
| Road | Route miles (from–to) | Length, mi | State |
|---|---|---|---|
| TX 27 | 0–7 | 7 | Texas |
| connecting roads | 7–9 | 2 | Texas |
| RM 480 | 9–15 | 6 | Texas |
| TX 173 | 15–55 | 40 | Texas |
| connecting roads | 55–56 | 1 | Texas |
| US-90 | 56–101 | 45 | Texas |
| FM 481 | 101–144 | 43 | Texas |
| US-57 | 144–158 | 14 | Texas |
| local roads | 158–160 | 2 | Coahuila |
- Mile 158 of this route: Texas → Coahuila (international border)
Stops between Comfort and Piedras Negras
- Right off the route (under 1 mile): Grand Opera House (mile 99)
- Nature and outdoors: Hill Country State Natural Area (mile 40)
- Museums and history: Grand Opera House (mile 99)
Hill Country State Natural Area
Over 5,000 acres of rugged canyons, plateaus, and creek bottoms near Bandera, with multiuse trails for hikers, mountain bikers, and horseback riders. Primitive and equestrian camping make it a base for longer rides.
Grand Opera House
Uvalde's restored Victorian opera house, with arched windows, a copper roof, and a corner turret, still hosts live theater and music upstairs. A visitor center displays the original weathervane, historic photographs, and artifacts from Fort Inge.
When you get to Piedras Negras
Directly across the Rio Grande from Eagle Pass, Texas, Piedras Negras is a border city in northern Coahuila linked to Texas by three international bridges. It lays claim to a snack known worldwide: in 1943 chef Ignacio Anaya first served nachos at the Club Victoria here, and the city hosts a nacho festival every year.
- Gran Plaza: The Museo de la Frontera Norte, the Chapulín children's museum and the José Vasconcelos Auditorium all stand on this civic plaza. source
- Paseo del Río: A pedestrian corridor runs along the Rio Grande riverfront, with views across to Eagle Pass. source
- Macroplaza de los Fundadores: The founders' plaza has an acoustic shell and a clock tower, near historic buildings such as the old telegraph and post office. source
Martyrs of Christ the King Cathedral, Piedras Negras
The Martyrs of Christ the King Cathedral is the Catholic cathedral of Piedras Negras, a city in northeastern Coahuila on the border across from Eagle Pass, Texas.
More drives to Piedras Negras
- Laredo, TX to Piedras Negras
- Brenham, TX to Piedras Negras
- Austin, TX to Piedras Negras
- Waxahachie, TX to Piedras Negras
- Chickasha, OK to Piedras Negras
- Waco, TX to Piedras Negras
From Comfort to other places in Mexico
- Comfort, TX to Real de Catorce
- Comfort, TX to Ciudad Acuña
- Comfort, TX to Múzquiz
- Comfort, TX to Matamoros
- Comfort, TX to Monterrey
- Comfort, TX to Parras de la Fuente
All routes to Piedras Negras, border crossings and permits in one place: Driving to Piedras Negras, Mexico from the U.S.
Continue Your Adventure
Frequently asked questions
How long is the drive from Comfort to Piedras Negras?
About 3 h 39 min of driving without stops, over 160 miles.
How far is Piedras Negras from Comfort by car?
About 160 miles (258 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 Comfort to Piedras Negras drive cross into Mexico?
At about mile 158 of this route, from Texas into Coahuila, near the Eagle Pass port of entry.
Do I need a permit to drive my car from Comfort to Piedras Negras?
Not needed inside the border zone; required if you drive farther into Mexico. You also need Mexican auto insurance and a passport book or card.
Is it safe to drive from Comfort to Piedras Negras?
The U.S. State Department rates Coahuila Level 3: Reconsider Travel (advisory issued May 29, 2026). Read the full advisory before you go.
What roads does the drive from Comfort to Piedras Negras use?
In order: TX 27, RM 480, TX 173, US-90, FM 481 and US-57. The road-by-road table above shows the route miles and states for each one.
What are good stops between Comfort and Piedras Negras?
Closest to the road: Hill Country State Natural Area (state park, mile 40, 6 mi from the route); Grand Opera House (opera house, mile 99, 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 mile 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 (roughly 2 to 7 miles depending on the type, farther for World Heritage sites): at least one strong stop for each stretch of the drive, then the best-known places nearest the road, with no more than five of one type, up to nine in all. Places that are closed, private or not open to visitors are removed. Place and city 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 September 29, 2026. Conditions change, so check the linked sources before you travel.
Route data © OpenStreetMap contributors.