Live Chat I-15 Community Nearby Traffic CA 78 2024-10-31 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to CA 78 San Marcos, CA 8.13 San Diego, CA 9.99 Poway, CA 15.16 Interstate highway exits close to CA 78 Exit 29, i15 1.95 Exit 30, i15 2.23 Exit 31, i15 2.80 Interstate highways close to CA 78 i15 map 1.95 i5 map 21.03 i805ca map 26.69 State roads close to CA 78 CA 78 map 1.43 CA CR S6 map 1.81 CA CR S14 map 3.02