The Wayro route from Julian to Agua Prieta is 502 miles (808 km), about 8 h 54 min of driving without stops. The U.S.–Mexico border is at about mile 501 on this route, near the Douglas port of entry.
| Distance | 502 mi (808 km) |
|---|---|
| Driving time, no stops | 8 h 54 min |
| Main roads, in order | CA-78 → CR S2 → I-8 → I-10 → US-80 Hist → AZ 80 |
| Border crossing | about mile 501 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 20.1 gal; actual use varies by vehicle and traffic |
| Stops listed below | 8 |
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 Julian to Agua Prieta is like
I-8 (261 mi) and I-10 (103 mi) carry about 73% of the 502 miles. The U.S. part of the drive runs through California, Arizona for about 501 miles; after the border at Douglas you are practically in Agua Prieta. Of the 8 stops listed below, 1 are within a mile of the road.
The route from Julian to Agua Prieta, road by road
| Road | Route miles (from–to) | Length, mi | State |
|---|---|---|---|
| CA-78 | 0–12 | 12 | California |
| CR S2 | 12–59 | 47 | California |
| I-8 | 59–320 | 261 | California, Arizona |
| connecting roads | 320–321 | 1 | Arizona |
| I-10 | 321–424 | 103 | Arizona |
| connecting roads | 424–425 | 1 | Arizona |
| US-80 Hist | 425–450 | 25 | Arizona |
| AZ 80 | 450–500 | 50 | Arizona |
| local roads | 500–502 | 2 | Arizona, Sonora |
- Mile 138 of this route: California → Arizona (state line)
- Mile 501 of this route: Arizona → Sonora (international border)
Stops between Julian and Agua Prieta
- Right off the route (under 1 mile): Cathedral of Saint Augustine (mile 380)
- Nature and outdoors: Yuha Desert (mile 68), Colorado Desert (mile 101), Sonoran Desert National Monument (mile 271), Picacho Peak State Park (mile 341), Kartchner Caverns State Park (mile 432)
- Museums and history: Sonoran Desert National Monument (mile 271), Cathedral of Saint Augustine (mile 380), Pima Air & Space Museum (mile 390)
Yuha Desert
South of Interstate 8 and west of El Centro, this Sonoran Desert basin holds Yuha Well, the favored water stop of the Anza expeditions of 1774–76. A State Historic Landmark plaque at the eastbound Sunbeam rest area on I-8 near Seeley tells the story.
Colorado Desert
Part of the larger Sonoran Desert, the Colorado Desert stretches across Southern California into Baja California. Its low basins are dominated by creosote, ocotillo and cholla cactus, and it meets the Mojave Desert inside Joshua Tree National Park.
Ogilby Hills
The Ogilby Hills are a desert mountain range in Imperial County, California, part of the Colorado Desert in the Lower Colorado River Valley near the Colorado River.
Sonoran Desert National Monument
Created in 2001, this BLM monument protects saguaro forests across the Maricopa, Sand Tank, and Table Top mountains. Traces of the Juan Bautista de Anza and Butterfield Overland trails cross it, and hikers, campers, and stargazers find three wilderness areas.
Picacho Peak State Park
Between Tucson and Casa Grande off I-10, the park surrounds 1,500-foot Picacho Peak, site of the 1862 Battle of Picacho Pass. Expect hiking trails, a campground, and spring displays of Mexican gold poppies.
Cathedral of Saint Augustine
Mother church of the Diocese of Tucson, this downtown cathedral wears a 1928 cast-stone façade inspired by the Cathedral of Querétaro, Mexico, decorated with yucca and saguaro blossoms and a depiction of Mission San Xavier del Bac.
Pima Air & Space Museum
Open since 1976, Tucson's aerospace museum spreads across 80 acres with about 400 historic aircraft, ranging from a Wright Flyer to a Boeing 787 Dreamliner, shown outdoors and in six indoor exhibit hangars.
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
- Williams, AZ to Agua Prieta
- Rancho Mirage, CA to Agua Prieta
- Santa Fe, NM to Agua Prieta
From Julian to other places in Mexico
- Julian, CA to Puerto Peñasco
- Julian, CA to Guerrero Negro
- Julian, CA to San Quintín
- Julian, CA to Cananea
- Julian, CA to Hermosillo
- Julian, CA to Sonoyta
All routes to Agua Prieta, border crossings and permits in one place: Driving to Agua Prieta, Mexico from the U.S.
Continue Your Adventure
Frequently asked questions
How long is the drive from Julian to Agua Prieta?
About 8 h 54 min of driving without stops, over 502 miles.
How far is Agua Prieta from Julian by car?
About 502 miles (808 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 Julian to Agua Prieta drive cross into Mexico?
At about mile 501 of this route, from Arizona into Sonora, near the Douglas port of entry.
Do I need a permit to drive my car from Julian 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 Julian 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 Julian to Agua Prieta use?
In order: CA-78, CR S2, I-8, 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 Julian and Agua Prieta?
Closest to the road: Picacho Peak State Park (state park, mile 341, 2 mi from the route); Cathedral of Saint Augustine (catholic cathedral, mile 380, 0.6 mi from the route); Pima Air & Space Museum (aviation museum, mile 390, 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.