| Oceanside to Castle Pines (Colorado) | 814.24 mi (1,310.39 km) |
| Oceanside to Castle Rock (Colorado) | 812.26 mi (1,307.20 km) |
| Oceanside to Castro Valley (California) | 409.22 mi (658.58 km) |
| Oceanside to Catalina Foothills (Arizona) | 378.58 mi (609.26 km) |
| Oceanside to Cataño (Puerto Rico) | 3,306.81 mi (5,321.80 km) |
| Oceanside to Cathedral City (California) | 64.41 mi (103.66 km) |
| Oceanside to Catonsville (Maryland) | 2,279.23 mi (3,668.06 km) |
| Oceanside to Cave Spring (Virginia) | 2,109.75 mi (3,395.31 km) |
| Oceanside to Cayce (South Carolina) | 2,077.02 mi (3,342.64 km) |
| Oceanside to Cayey (Puerto Rico) | 3,316.40 mi (5,337.23 km) |
| Oceanside to Cedar City (Utah) | 388.64 mi (625.46 km) |
| Oceanside to Cedar Falls (Iowa) | 1,492.57 mi (2,402.05 km) |
| Oceanside to Cedar Hill (Texas) | 1,179.44 mi (1,898.13 km) |
| Oceanside to Cedar Lake (Indiana) | 1,725.34 mi (2,776.67 km) |
| Oceanside to Cedar Mill (Oregon) | 899.18 mi (1,447.08 km) |
