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Directions to San Carlos, Mexico

San Carlos, Mexico is approximately 4 hours (250 miles) south of the border at Nogales, AZ. The route is Mexico Federal Highway 15, which is a four-lane road. This route will take you through Imuris, Magdalena, Santa Ana, and Hermosillo. There are three toll booths en route at Nogales, Magdalena, and Hermosillo. The toll for an automobile is from $2-6 at each booth, depending on currency rates.

There are two border crossing points in Nogales. The original point is downtown and can be reached by following 1-19 from Tucson to its end or by going south on Business 19 if coming from the east on AZ Hwy 82. This crossing is open 24 hours per day. It is usually very busy and is not suitable if you are towing a boat. We prefer and recommend the newer Mariposa crossing on Hwy 189. If coming from Tucson, exit I-19 at Hwy 189 and go west. If coming from the east on Hwy 82, take North Business 19 and turn left at the second traffic light. The crossing is open daily from 6am to 10pm, but is much less constricted. It is the way to go if towing anything bigger than a jet-ski or ATV.

From Phoenix:
Take I-10 East to Tucson.
Take I-19 South from Tucson to Nogales.
Exit at Hwy 189 and go west (right) onto Mariposa Road. The border is approximately 2.5 miles further down the road.
After crossing the border, proceed on toll road / Hwy 15 through Magdalena, Santa Ana, and into Hermosillo.
Once you are in Hermosillo, follow the road signs to Guaymas. You will turn left at about the 3rd stoplight (there will be a sign directing you to Guaymas). There is an old Chevrolet dealership on the corner.
Follow the surface streets through town. You will pass a park, a dam, and a prison.
Shortly after the prison, the road will fork. Stay right (there will be a sign directing you to Guaymas) and proceed to the stoplight up ahead.
Turn left at the stoplight (there will be a sign directing you to Guaymas). There is a KFC on the far left corner and San Sebastian Hotel on the near left corner.
You are now back on Hwy 15. Proceed south to San Carlos.
After approximately 80 miles the road will split, Guaymas to the left and San Carlos to the right. Stay right.
Follow the road for several more miles and it will take you into town.