59 miles up I-15 NORTH.
It is 58.5 miles according to MapQuest.
90 miles taking this route:Take I-105 EAST from Inglewood to I-110 SOUTH to SAN PEDRO at EXIT 7B.Take I-110 SOUTH to SR-91 FREEWAY at EXIT 10. Follow signs to SR-91 EAST.Take SR-91 EAST to I-15 SOUTH to SAN DIEGO at EXIT 51 in Corona, INLAND EMPIRE.Take I-15 SOUTH to Temecula.
About an hour.
about 144 miles taking I-405 SOUTH to I-5 SOUTH, then I-5 SOUTH to San Diego.
about 144 miles taking I-405 SOUTH to I-5 SOUTH, then I-5 SOUTH to San Diego.
35 miles taking this route:Take 78 FREEWAY - EAST, from San Marcos, to I-15 SOUTH to SAN DIEGO off EXIT 17A.Take I-15 SOUTH to San Diego.
It is a one hour drive covering 58.5 miles according to MapQuest.
It is about 2,500 miles.
Fallbrook, CA is in San Diego County. It is very far north in the county and is only about 15 miles away from Temecula, CA which is in (southern) Riverside County.
San Diego's city boundary has expanded South to the border with Mexico so that the two cities are joined and are considered a single metropolitan area.
not to far, they're both in Downtown San Diego
You can make the border in about 600 miles. San Diego is another 800 miles south.