| Oceanside to San Luis Obispo (California) | 238.20 mi (383.35 km) |
| Oceanside to San Marcos (California) | 9.92 mi (15.97 km) |
| Oceanside to San Marcos (Texas) | 1,162.13 mi (1,870.28 km) |
| Oceanside to San Marino (California) | 77.39 mi (124.55 km) |
| Oceanside to San Mateo (California) | 410.77 mi (661.07 km) |
| Oceanside to San Pablo (California) | 432.49 mi (696.02 km) |
| Oceanside to San Rafael (California) | 440.53 mi (708.96 km) |
| Oceanside to San Ramon (California) | 407.41 mi (655.66 km) |
| Oceanside to San Tan Valley (Arizona) | 332.14 mi (534.52 km) |
| Oceanside to Sand Springs (Oklahoma) | 1,217.58 mi (1,959.51 km) |
| Oceanside to Sandusky (Ohio) | 1,969.43 mi (3,169.49 km) |
| Oceanside to Sandy (Oregon) | 881.51 mi (1,418.65 km) |
| Oceanside to Sandy (Utah) | 590.09 mi (949.66 km) |
| Oceanside to Sandy Springs (Georgia) | 1,888.43 mi (3,039.14 km) |
| Oceanside to Sanford (Florida) | 2,145.14 mi (3,452.28 km) |
