It is the D2 Interstate Highway, called La Primorosa. It is pretty safe, but you should travel it by day as it passes some gullies.
The driving distance from Denver, CO, USA to Tijuana, Baja California, Mexico is 1,094mi / 1760.62km
Road distance is 1,717 miles. You would need a 31-hour drive, or a 6-hour flight to travel the distance between Tijuana and Mexico City.
Road distance is 2,509 kilometers (1,559 miles) over a 27-hour, non-stop drive.
Road distance is 2,138 kilometers (1,329 miles). You would need a 20-hour drive, or a 5-hour flight to travel the distance between Tijuana and Nuevo Laredo.
Road distance is 2,362 kilometers (1,468 miles) over a 24-hour, non-stop drive.
The Penitenciaria de la Mesa in Tijuana, Mexico is very close to the Mexico/US border. As the crow flies, that is, in a straight line (or a mole's tunnel) 4.5 km (2.8 miles). By road, 7.9 km (4.8 miles).
You will need to travel 2 hours and a half along 133 miles (214 Km) of road.
Air distance is approximately 2,034 kilometers (1,264 miles) if you just consider distance between Tijuana and the Gulf of Mexico (which may or may not be considered as part of the Atlantic Ocean). Distance to the actual Atlantic Ocean (whose border is defined between Florida and Cuba) is 3,640 kilometers (2,262 miles).
Road distance is 2191 kilometers (1362 miles) over a 21-hour, non-stop drive.
Road distance is 925 kilometers (575 miles) over a 10-hour, non-stop drive.
Distance is 5,691 kilometers (3,537 miles) over a 69-hour, non-stop trip.
There are no passenger train routes between Ahualulco an Tijuana; only road transport would take you there. Travel time is approximately 24 hours after a non-stop drive.