The Wayro route from Williams to San Luis Río Colorado is 314 miles (506 km), about 6 h 35 min of driving without stops. The U.S.–Mexico border is at about mile 311 on this route, near the San Luis port of entry.
| Distance | 314 mi (506 km) |
|---|---|
| Driving time, no stops | 6 h 35 min |
| Main roads, in order | I-40 → AZ 89 → CR 15 → AZ 71 → US-60 → I-10 → US-95 → AZ 195 |
| Border crossing | about mile 311 of this route, Arizona → Sonora (near the San Luis, AZ port of entry) |
| Mexican states on the route | Sonora (Level 3) |
| Fuel estimate (car at 25 mpg) | about 12.6 gal; actual use varies by vehicle and traffic |
| Stops listed below | 5 |
Crossing into Mexico: what you need for San Luis Río Colorado
| 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: San Luis Río Colorado 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 San Luis
The San Luis port connects San Luis, Arizona, south of Yuma, with San Luis Río Colorado, Sonora. It handles passenger vehicles and heavy pedestrian traffic, and GSA calls it the second busiest non-commercial vehicle port in Arizona; trucks use the separate San Luis II crossing east of town.
What the drive from Williams to San Luis Río Colorado is like
US-95 (75 mi) and AZ 89 (64 mi) carry about 44% of the 314 miles. The U.S. part of the drive runs through Arizona for about 311 miles; after the border at San Luis you have about 3 miles left in Mexico. Of the 5 stops listed below, 2 are within a mile of the road.
The route from Williams to San Luis Río Colorado, road by road
| Road | Route miles (from–to) | Length, mi | State |
|---|---|---|---|
| local roads | 0–2 | 2 | Arizona |
| I-40 | 2–17 | 15 | Arizona |
| AZ 89 | 17–61 | 44 | Arizona |
| local roads | 61–91 | 30 | Arizona |
| CR 15 | 91–96 | 5 | Arizona |
| AZ 89 | 96–116 | 20 | Arizona |
| AZ 71 | 116–140 | 24 | Arizona |
| US-60 | 140–196 | 56 | Arizona |
| I-10 | 196–206 | 10 | Arizona |
| connecting roads | 206–208 | 2 | Arizona |
| US-95 | 208–283 | 75 | Arizona |
| connecting roads | 283–284 | 1 | Arizona |
| AZ 195 | 284–310 | 26 | Arizona |
| local roads | 310–314 | 4 | Arizona, Sonora |
- Mile 311 of this route: Arizona → Sonora (international border)
Stops between Williams and San Luis Río Colorado
- Right off the route (under 1 mile): Ashfork-Bainbridge Steel Dam (mile 14), Yuma Desert (mile 295)
- Nature and outdoors: Yuma Desert (mile 295)
- Museums and history: Sharlot Hall Museum (mile 68)
Ashfork-Bainbridge Steel Dam
Listed on the National Register of Historic Places, this steel dam in Coconino County is named for the town of Ash Fork and for Santa Fe railway engineer Francis H. Bainbridge.
Buckey O'Neill Monument
On Prescott's Courthouse Plaza, this Solon Borglum sculpture honors William "Buckey" O'Neill of the 1st U.S. Volunteer Cavalry, better known as the Rough Riders. It is an easy stop on a stroll around the plaza.
Sharlot Hall Museum
Founded by Sharlot M. Hall in 1928, this four-acre museum campus in Prescott includes eight historic buildings, among them the 1864 Territorial Governor's Mansion. Exhibits, a stagecoach, and a rose garden honoring pioneer women round out a visit.
Hi Jolly Monument
This Quartzsite memorial marks the grave of Hi Jolly, a Syrian-born camel driver in the U.S. Army's experimental camel program who later worked as a prospector, scout and courier. The state erected the monument in 1934.
Yuma Desert
South of Yuma along the Mexican border, this low Sonoran Desert plain is a sweep of sand dunes and sandy soils, including the Yuma Dunes, where rare plants such as sandfood grow and flat-tailed horned lizards and fringe-toed lizards live.
When you get to San Luis Río Colorado
San Luis Río Colorado sits in Sonora's far northwest corner, across the line from San Luis, Arizona, between the sand sea of the Gran Desierto de Altar and the Baja California state line. The municipality promotes itself as Mexico's date capital, and it cites the National Weather Service in calling itself the hottest city in Mexico.
- Museo Regional: Set inside the city's urban park, the regional museum keeps a permanent exhibit on the Cucapá people alongside rotating shows by local and regional artists. source
- Bosque de la Ciudad: This big green space in the middle of town holds a 7,000-seat ballpark, playgrounds and sports fields where local leagues play. source
- Teatro Río Colorado: The city's 600-seat theater on Avenida Madero hosts concerts and dance performances organized by local and regional cultural groups. source
More drives to San Luis Río Colorado
- Encinitas, CA to San Luis Río Colorado
- Boulder City, NV to San Luis Río Colorado
- Pismo Beach, CA to San Luis Río Colorado
- Carlsbad, CA to San Luis Río Colorado
- Santa Ana, CA to San Luis Río Colorado
- Santa Barbara, CA to San Luis Río Colorado
From Williams to other places in Mexico
- Williams, AZ to Hermosillo
- Williams, AZ to Magdalena de Kino
- Williams, AZ to Agua Prieta
- Williams, AZ to Ensenada
- Williams, AZ to Tijuana
- Williams, AZ to Mexicali
All routes to San Luis Río Colorado, border crossings and permits in one place: Driving to San Luis Río Colorado, Mexico from the U.S.
Continue Your Adventure
Frequently asked questions
How long is the drive from Williams to San Luis Río Colorado?
About 6 h 35 min of driving without stops, over 314 miles.
How far is San Luis Río Colorado from Williams by car?
About 314 miles (506 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 San Luis Río Colorado drive cross into Mexico?
At about mile 311 of this route, from Arizona into Sonora, near the San Luis port of entry.
Do I need a permit to drive my car from Williams to San Luis Río Colorado?
No vehicle permit is needed. San Luis Río Colorado 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 San Luis Río Colorado?
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 San Luis Río Colorado use?
In order: I-40, AZ 89, CR 15, AZ 71, US-60, I-10, US-95 and AZ 195. The road-by-road table above shows the route miles and states for each one.
What are good stops between Williams and San Luis Río Colorado?
Closest to the road: Ashfork-Bainbridge Steel Dam (dam, mile 14, 0.9 mi from the route); Hi Jolly Monument (grave, mile 208, 1 mi from the route); Yuma Desert (desert, mile 295, 0.6 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.