| Gas Station | Regular | Plus | Premium | Diesel |
 | 7-Eleven
578 E Mission Rd, San Marcos, CA 92069
Get Directions | $4.069 | $4.219 | N/A | N/A |
 | Circle K
190 W San Marcos Blvd, San Marcos, CA 92069
Get Directions | $4.119 | $4.239 | N/A | N/A |
 | Chevron
1290 W Mission Rd, San Marcos, CA 92069
Get Directions | $4.139 | $4.219 | $4.299 | $4.099 |
 | G & M Food Mart
130 Knoll Rd, San Marcos, CA 92069
Get Directions | $4.099 | $4.259 | $4.359 | $3.939 |
| 7-Eleven
696 W San Marcos Blvd, San Marcos, CA 92096
Get Directions | $4.099 | N/A | $4.199 | $3.999 |
| Chevron
110 S Rancho Santa Fe Rd, San Marcos, CA 92078
Get Directions | $4.079 | $4.179 | $4.279 | $3.979 |
| Chevron
1200 W San Marcos Blvd, San Marcos, CA 92078
Get Directions | $4.099 | $4.219 | $4.299 | N/A |
 | 76
102 E Carmel St, San Marcos, CA 92078
Get Directions | $4.199 | $4.299 | $4.399 | N/A |
| Unbranded
105 S Rancho Santa Fe Rd, San Marcos, CA 92078
Get Directions | $3.999 | N/A | $3.999
Lowest Price | N/A |
| Unbranded
145 Via Vera Cruz, San Marcos, CA 92078
Get Directions | $4.039 | N/A | N/A | $4.139 |
 | Shell
679 W San Marcos Blvd, San Marcos, CA 92078
Get Directions | $4.059 | $4.159 | N/A | $3.939 |
| Shell
800 S Rancho Santa Fe Rd, San Marcos, CA 92078
Get Directions | $3.979
Lowest Price | $4.179 | N/A | $3.919
Lowest Price |
| G & M Food Mart
112 S Rancho Santa Fe Rd, San Marcos, CA 92078
Get Directions | $4.099 | $4.199 | $4.299 | $3.999 |
| Chevron
1710 San Elijo Rd, San Marcos, CA 92078
Get Directions | $4.099 | $4.239 | $4.339 | $3.999 |
| 7-Eleven
1030 N Broadway, Escondido, CA 92026
Get Directions | $4.069 | $4.169 | N/A | N/A |
| 7-Eleven
1177 N Escondido Blvd, Escondido, CA 92026
Get Directions | $4.059 | $4.139
Lowest Price | $4.259 | N/A |
| Shell
780 W El Norte Pkwy, Escondido, CA 92026
Get Directions | $4.059 | $4.159 | $4.279 | N/A |
| 76
1062 W El Norte Pkwy, Escondido, CA 92026
Get Directions | $4.159 | $4.279 | $4.399 | $3.949 |
| Shell
615 W El Norte Pkwy, Escondido, CA 92026
Get Directions | $4.039 | $4.159 | $4.239 | $3.959 |
| Shell
3480 Del Lago Blvd, Escondido, CA 92029
Get Directions | $4.059 | $4.169 | $4.269 | $3.939 |