The Wayro route from Williams to Agua Prieta is 408 miles (657 km), about 6 h 58 min of driving without stops. The U.S.–Mexico border is at about mile 408 on this route, near the Douglas port of entry.
| Distance | 408 mi (657 km) |
|---|---|
| Driving time, no stops | 6 h 58 min |
| Main roads, in order | I-40 → I-17 → I-10 → US-80 Hist → AZ 80 |
| Border crossing | about mile 408 of this route, Arizona → Sonora (near the Douglas, AZ port of entry) |
| Mexican states on the route | Sonora (Level 3) |
| Fuel estimate (car at 25 mpg) | about 16.3 gal; actual use varies by vehicle and traffic |
| Stops listed below | 7 |
Crossing into Mexico: what you need for Agua Prieta
| 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: Agua Prieta is inside Sonora's free zone (west of Highway 15 as far south as Empalme, plus a strip along the border that includes Cananea). Going farther south or east of Highway 15 requires a permit |
| 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. Sonora free zone: Explore Sonora.
Crossing at Douglas
The Raul Hector Castro port in Douglas sits directly across from Agua Prieta, Sonora. It inspects passenger vehicles, pedestrians and commercial trucks, and GSA plans to move truck traffic to a new stand-alone commercial port about 4.5 miles away.
What the drive from Williams to Agua Prieta is like
I-17 (157 mi) and I-10 (142 mi) carry about 73% of the 408 miles. The U.S. part of the drive runs through Arizona for about 408 miles; after the border at Douglas you are practically in Agua Prieta. Of the 7 stops listed below, 2 are within a mile of the road.
The route from Williams to Agua Prieta, road by road
| Road | Route miles (from–to) | Length, mi | State |
|---|---|---|---|
| local roads | 0–3 | 3 | Arizona |
| I-40 | 3–32 | 29 | Arizona |
| I-17 | 32–189 | 157 | Arizona |
| I-10 | 189–331 | 142 | Arizona |
| US-80 Hist | 331–356 | 25 | Arizona |
| AZ 80 | 356–406 | 50 | Arizona |
| local roads | 406–408 | 2 | Arizona |
- Mile 408 of this route: Arizona → Sonora (international border)
Stops between Williams and Agua Prieta
- Right off the route (under 1 mile): Montezuma Castle National Monument (mile 80), Arizona State Capitol (mile 171)
- Nature and outdoors: Walnut Canyon National Monument (mile 32), Kartchner Caverns State Park (mile 338)
- Museums and history: Walnut Canyon National Monument (mile 32), Montezuma Castle National Monument (mile 80), Agua Fria National Monument (mile 119), Arizona State Capitol (mile 171), Casa Grande Ruins National Monument (mile 219)
Lowell Observatory
Percival Lowell founded this Mars Hill observatory in Flagstaff in 1894, and Clyde Tombaugh discovered Pluto here in 1930; today visitors can see the Pluto Discovery Dome and look through public telescopes at the Open Deck Observatory.
Walnut Canyon National Monument
Cliff dwellings built between 1125 and 1250 CE line this canyon near Flagstaff. The Island Trail descends 240 stairs past 25 of them, while the shorter Rim Trail offers wide views of the canyon and its dwellings.
Montezuma Castle National Monument
Tucked into an alcove about 90 feet up a limestone cliff, this 20-room Sinagua dwelling is viewed from below. Established in 1906, the monument also includes Montezuma Well, a separate unit that once supplied the Sinagua with water.
Agua Fria National Monument
About 40 miles north of Phoenix off I-17, this BLM monument protects mesa-top pueblo ruins, petroglyph panels, and the Agua Fria River canyon, with hiking, birding, and primitive camping; much of Bloody Basin Road needs high clearance.
Arizona State Capitol
Built from 1898 to 1901 and topped by a copper dome and a Winged Victory weathervane, Arizona's historic capitol now houses the Arizona Capitol Museum, including USS Arizona artifacts. Monuments and memorials fill Wesley Bolin Plaza outside.
Casa Grande Ruins National Monument
Standing for more than 600 years, the Great House is the centerpiece of this preserved Ancestral Sonoran Desert People's farming community near Coolidge. Visitors can also see the adobe walls of Compound A and a visitor center museum.
Kartchner Caverns State Park
Discovered in 1974 in the Whetstone Mountains, this living limestone cave is seen on guided tours past formations like Kubla Khan, a 58-foot column, and a 21-foot soda straw; above ground, the park has trails and camping.
When you get to Agua Prieta
Right across the line from Douglas, Arizona, Agua Prieta grew up where the railroad from Douglas to the Nacozari mines met the border. Today it is a working border city built on trade, manufacturing, mining and ranching, and it serves as the gateway to the Sierra Alta circuit of small mountain towns in northeastern Sonora.
- Edificio de la Aduana: The old customs house, built in 1918, recalls the Nacozari Railroad concession of 1899 that put Agua Prieta on the map. source
- Plaza de Armas Azueta: Locals call the main plaza the park of Agua Prieta's history and traditions, and it remains the setting for civic and community events. source
- Downtown churches: The Iglesia de Nuestra Señora de Guadalupe and the Iglesia del Sagrado Corazón are both listed among the city's visitor attractions. source
Douglas Historic District
Douglas grew up as a Phelps Dodge copper-smelting town, and this National Register district along G Avenue preserves its 1901-1935 commercial core, including the 1906 Gadsden Hotel and the terra-cotta-fronted Grand Theatre.
Gadsden Hotel
Opened in 1907 and rebuilt after a 1928 fire, this downtown Douglas hotel has a lobby with a white Italian marble staircase, gold-leafed marble columns, and a 42-foot stained-glass desert mural by Ralph Baker.
More drives to Agua Prieta
- Palm Springs, CA to Agua Prieta
- El Centro, CA to Agua Prieta
- Flagstaff, AZ to Agua Prieta
- Rancho Mirage, CA to Agua Prieta
- Santa Fe, NM to Agua Prieta
- Kayenta, AZ to Agua Prieta
From Williams to other places in Mexico
- Williams, AZ to Hermosillo
- Williams, AZ to Magdalena de Kino
- Williams, AZ to Ensenada
- Williams, AZ to Tijuana
- Williams, AZ to Mexicali
- Williams, AZ to Nogales
All routes to Agua Prieta, border crossings and permits in one place: Driving to Agua Prieta, Mexico from the U.S.
Frequently asked questions
How long is the drive from Williams to Agua Prieta?
About 6 h 58 min of driving without stops, over 408 miles.
How far is Agua Prieta from Williams by car?
About 408 miles (657 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 Williams to Agua Prieta drive cross into Mexico?
At about mile 408 of this route, from Arizona into Sonora, near the Douglas port of entry.
Do I need a permit to drive my car from Williams to Agua Prieta?
No vehicle permit is needed. Agua Prieta is inside Sonora's free zone (west of Highway 15 as far south as Empalme, plus a strip along the border that includes Cananea). Going farther south or east of Highway 15 requires a permit. You also need Mexican auto insurance and a passport book or card.
Is it safe to drive from Williams to Agua Prieta?
The U.S. State Department rates Sonora Level 3: Reconsider Travel (advisory issued May 29, 2026). Read the full advisory before you go.
What roads does the drive from Williams to Agua Prieta use?
In order: I-40, I-17, I-10, US-80 Hist and AZ 80. The road-by-road table above shows the route miles and states for each one.
What are good stops between Williams and Agua Prieta?
Closest to the road: Lowell Observatory (astronomical observatory, mile 31, 2 mi from the route); Montezuma Castle National Monument (National monument, mile 80, 0.6 mi from the route); Arizona State Capitol (history museum, mile 171, 0.7 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.