| Oceanside to Cordele (Georgia) | 1,946.04 mi (3,131.85 km) |
| Oceanside to Corinth (Mississippi) | 1,646.30 mi (2,649.46 km) |
| Oceanside to Corinth (Texas) | 1,168.57 mi (1,880.62 km) |
| Oceanside to Cornelius (North Carolina) | 2,072.04 mi (3,334.63 km) |
| Oceanside to Cornelius (Oregon) | 902.50 mi (1,452.43 km) |
| Oceanside to Corning (New York) | 2,262.83 mi (3,641.68 km) |
| Oceanside to Corona (California) | 46.42 mi (74.71 km) |
| Oceanside to Coronado (California) | 39.62 mi (63.76 km) |
| Oceanside to Corpus Christi (Texas) | 1,243.86 mi (2,001.80 km) |
| Oceanside to Corsicana (Texas) | 1,212.99 mi (1,952.12 km) |
| Oceanside to Cortland (New York) | 2,308.90 mi (3,715.81 km) |
| Oceanside to Corvallis (Oregon) | 846.44 mi (1,362.22 km) |
| Oceanside to Coshocton (Ohio) | 2,008.24 mi (3,231.95 km) |
| Oceanside to Costa Mesa (California) | 46.37 mi (74.62 km) |
| Oceanside to Coto de Caza (California) | 30.24 mi (48.66 km) |
