| Oklahoma City to Castrovillari | 5,742.34 mi (9,241.40 km) |
| Oklahoma City to Catania | 5,802.44 mi (9,338.13 km) |
| Oklahoma City to Catanzaro | 5,800.29 mi (9,334.67 km) |
| Oklahoma City to Cattolica | 5,421.40 mi (8,724.91 km) |
| Oklahoma City to Cava de' Tirreni | 5,642.59 mi (9,080.87 km) |
| Oklahoma City to Cavallino | 5,798.02 mi (9,331.01 km) |
| Oklahoma City to Cavarzere | 5,345.99 mi (8,603.54 km) |
| Oklahoma City to Cave | 5,522.71 mi (8,887.94 km) |
| Oklahoma City to Cavriago | 5,304.55 mi (8,536.85 km) |
| Oklahoma City to Cavriglia | 5,391.83 mi (8,677.31 km) |
| Oklahoma City to Cazzago San Martino | 5,248.10 mi (8,446.00 km) |
| Oklahoma City to Ceccano | 5,549.62 mi (8,931.25 km) |
| Oklahoma City to Cecina | 5,361.98 mi (8,629.27 km) |
| Oklahoma City to Cefalu | 5,733.93 mi (9,227.87 km) |
| Oklahoma City to Ceglie Messapico | 5,755.30 mi (9,262.26 km) |
