| Okmulgee to Castrovillari | 5,674.86 mi (9,132.81 km) |
| Okmulgee to Catania | 5,732.89 mi (9,226.20 km) |
| Okmulgee to Catanzaro | 5,732.37 mi (9,225.36 km) |
| Okmulgee to Cattolica | 5,355.38 mi (8,618.66 km) |
| Okmulgee to Cava de' Tirreni | 5,575.05 mi (8,972.18 km) |
| Okmulgee to Cavallino | 5,731.84 mi (9,224.50 km) |
| Okmulgee to Cavarzere | 5,280.59 mi (8,498.29 km) |
| Okmulgee to Cave | 5,455.19 mi (8,779.28 km) |
| Okmulgee to Cavriago | 5,238.17 mi (8,430.01 km) |
| Okmulgee to Cavriglia | 5,324.94 mi (8,569.67 km) |
| Okmulgee to Cazzago San Martino | 5,182.19 mi (8,339.93 km) |
| Okmulgee to Ceccano | 5,482.09 mi (8,822.57 km) |
| Okmulgee to Cecina | 5,294.53 mi (8,520.73 km) |
| Okmulgee to Cefalu | 5,664.26 mi (9,115.75 km) |
| Okmulgee to Ceglie Messapico | 5,689.02 mi (9,155.59 km) |
