| Oceanside to Carrollwood (Florida) | 2,089.14 mi (3,362.15 km) |
| Oceanside to Carson (California) | 69.07 mi (111.16 km) |
| Oceanside to Carson City (Nevada) | 431.43 mi (694.31 km) |
| Oceanside to Carteret (New Jersey) | 2,409.04 mi (3,876.98 km) |
| Oceanside to Cartersville (Georgia) | 1,861.93 mi (2,996.48 km) |
| Oceanside to Carthage (Missouri) | 1,322.52 mi (2,128.39 km) |
| Oceanside to Cary (Illinois) | 1,695.01 mi (2,727.85 km) |
| Oceanside to Cary (North Carolina) | 2,184.63 mi (3,515.82 km) |
| Oceanside to Casa de Oro-Mount Helix (California) | 37.42 mi (60.22 km) |
| Oceanside to Casa Grande (Arizona) | 321.84 mi (517.95 km) |
| Oceanside to Casas Adobes (Arizona) | 370.77 mi (596.69 km) |
| Oceanside to Cascades (Virginia) | 2,245.30 mi (3,613.47 km) |
| Oceanside to Casper (Wyoming) | 892.36 mi (1,436.11 km) |
| Oceanside to Casselberry (Florida) | 2,145.12 mi (3,452.24 km) |
| Oceanside to Castaic (California) | 115.36 mi (185.66 km) |
