| Oklahoma City to Chivasso | 5,180.32 mi (8,336.92 km) |
| Oklahoma City to Ciampino | 5,510.11 mi (8,867.67 km) |
| Oklahoma City to Cicciano | 5,624.03 mi (9,051.00 km) |
| Oklahoma City to Cingoli | 5,466.25 mi (8,797.08 km) |
| Oklahoma City to Cinisello Balsamo | 5,217.98 mi (8,397.52 km) |
| Oklahoma City to Cinisi | 5,689.82 mi (9,156.88 km) |
| Oklahoma City to Cirie | 5,167.18 mi (8,315.77 km) |
| Oklahoma City to Ciro Marina | 5,799.79 mi (9,333.87 km) |
| Oklahoma City to Cislago | 5,204.14 mi (8,375.26 km) |
| Oklahoma City to Cisterna di Latina | 5,528.37 mi (8,897.05 km) |
| Oklahoma City to Cisternino | 5,748.85 mi (9,251.89 km) |
| Oklahoma City to Citta di Castello | 5,424.14 mi (8,729.32 km) |
| Oklahoma City to Citta Sant'Angelo | 5,536.11 mi (8,909.51 km) |
| Oklahoma City to Cittadella | 5,312.75 mi (8,550.05 km) |
| Oklahoma City to Cittanova | 5,804.58 mi (9,341.57 km) |
