The Wayro route from Ardmore to Piedras Negras is 514 miles (827 km), about 8 h 43 min of driving without stops. The U.S.–Mexico border is at about mile 511 on this route, near the Eagle Pass port of entry.
| Distance | 514 mi (827 km) |
|---|---|
| Driving time, no stops | 8 h 43 min |
| Main roads, in order | I-35 → I-35W → I-35W Express → US-57 |
| Border crossing | about mile 511 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 20.6 gal; actual use varies by vehicle and traffic |
| Stops listed below | 7 |
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 Ardmore to Piedras Negras is like
I-35 (288 mi) and I-35W (101 mi) carry about 76% of the 514 miles. The U.S. part of the drive runs through Oklahoma, Texas for about 511 miles; after the border at Eagle Pass you have about 3 miles left in Mexico. Of the 7 stops listed below, 1 are within a mile of the road.
The route from Ardmore to Piedras Negras, road by road
| Road | Route miles (from–to) | Length, mi | State |
|---|---|---|---|
| local roads | 0–4 | 4 | Oklahoma |
| I-35 | 4–32 | 28 | Oklahoma |
| local roads | 32–36 | 4 | Texas |
| I-35 | 36–69 | 33 | Texas |
| I-35W | 69–86 | 17 | Texas |
| I-35W Express | 86–103 | 17 | Texas |
| I-35W | 103–187 | 84 | Texas |
| I-35 | 187–414 | 227 | Texas |
| US-57 | 414–511 | 97 | Texas |
| local roads | 511–514 | 3 | Coahuila |
- Mile 32 of this route: Oklahoma → Texas (state line)
- Mile 511 of this route: Texas → Coahuila (international border)
Stops between Ardmore and Piedras Negras
- Right off the route (under 1 mile): Lyndon Baines Johnson Library and Museum (mile 289)
- Museums and history: Kimbell Art Museum (mile 103), Waco Mammoth National Monument (mile 187), Lyndon Baines Johnson Library and Museum (mile 289), Mission Concepcion (mile 372), Mission San Juan Capistrano (mile 374)
- With kids: San Antonio Zoo (mile 367)
Kimbell Art Museum
Opened in 1972 in a building by Louis I. Kahn, joined by a Renzo Piano Pavilion in 2013, Fort Worth's Kimbell holds about 350 masterworks, from ancient Egyptian sculpture to Caravaggio, Monet and Picasso.
Waco Mammoth National Monument
An elevated walkway in the Dig Shelter looks down on Columbian mammoth fossils still lying where they were found, part of the nation's first and only recorded evidence of a nursery herd of Ice Age Columbian mammoths.
Lyndon Baines Johnson Library and Museum
Run by the National Archives on the UT Austin campus, Lyndon B. Johnson's presidential library includes a replica of the Oval Office among its permanent exhibits.
San Antonio Zoo
Founded in 1914 in Brackenridge Park, the zoo covers more than 50 acres and is home to over 700 species.
Tower of the Americas
Built for the HemisFair '68 world's fair, the 750-foot tower has an observation deck at the top.
Mission Concepcion
Dedicated in 1755, the stone church here is one of the country's oldest remaining original stone churches and the least restored of San Antonio's colonial missions. Inside, four rooms still show colorful frescoes painted more than 250 years ago.
Mission San Juan Capistrano
Founded in 1716 in East Texas as Mission San José de los Nazonis, it was moved to the east bank of the San Antonio River in 1731 and renamed San Juan Capistrano. It's part of a UNESCO World Heritage Site.
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 Ardmore to other places in Mexico
All routes to Piedras Negras, border crossings and permits in one place: Driving to Piedras Negras, Mexico from the U.S.
Frequently asked questions
How long is the drive from Ardmore to Piedras Negras?
About 8 h 43 min of driving without stops, over 514 miles.
How far is Piedras Negras from Ardmore by car?
About 514 miles (827 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 Ardmore to Piedras Negras drive cross into Mexico?
At about mile 511 of this route, from Texas into Coahuila, near the Eagle Pass port of entry.
Do I need a permit to drive my car from Ardmore 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 Ardmore 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 Ardmore to Piedras Negras use?
In order: I-35, I-35W, I-35W Express and US-57. The road-by-road table above shows the route miles and states for each one.
What are good stops between Ardmore and Piedras Negras?
Closest to the road: Lyndon Baines Johnson Library and Museum (museum, mile 289, 0.2 mi from the route); Tower of the Americas (observation tower, mile 370, 1 mi from the route); Mission Concepcion (spanish mission, mile 372, 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 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.