Mexican Federal Highway 8

Federal Highway 8 (Carretera Federal 8, Fed. 8) is a free part of the federal highways corridors (los corredores carreteros federales) in Sonora. It is connected to the roadway that transitions from the border post at Lukeville, Arizona where it connects with Arizona State Route 85, proceeds south through Puerto Peñasco with Sonoyta, Sonora, and intersects with Fed. 2. It continues through the El Pinacate and Gran Desierto de Altar Biosphere Reserve until ending at Puerto Peñasco, a length of 100 km.

Major intersections
{| class=wikitable !Municipality !Location !km !mi !Roads intersected !Notes
 * rowspan=2|Puerto Peñasco
 * Puerto Peñasco
 * 0 km
 * 1 de Junio
 * Western terminus
 * 9.9 km
 * rowspan=3|Plutarco Elías Calles
 * rowspan=3|Sonoyta
 * 100 km
 * Begin overlay of Fed. 2
 * 101 km
 * End overlay of Fed. 2
 * 104 km
 * Eastern terminus at Mexico-U.S. border proceeding into Pima County, AZ
 * 100 km
 * Begin overlay of Fed. 2
 * 101 km
 * End overlay of Fed. 2
 * 104 km
 * Eastern terminus at Mexico-U.S. border proceeding into Pima County, AZ
 * End overlay of Fed. 2
 * 104 km
 * Eastern terminus at Mexico-U.S. border proceeding into Pima County, AZ
 * Eastern terminus at Mexico-U.S. border proceeding into Pima County, AZ
 * Eastern terminus at Mexico-U.S. border proceeding into Pima County, AZ