| Guymon to Chivasso | 5,273.14 mi (8,486.30 km) |
| Guymon to Ciampino | 5,604.83 mi (9,020.11 km) |
| Guymon to Cicciano | 5,717.49 mi (9,201.40 km) |
| Guymon to Cingoli | 5,555.23 mi (8,940.28 km) |
| Guymon to Cinisello Balsamo | 5,307.44 mi (8,541.49 km) |
| Guymon to Cinisi | 5,793.99 mi (9,324.53 km) |
| Guymon to Cirie | 5,260.34 mi (8,465.70 km) |
| Guymon to Ciro Marina | 5,892.61 mi (9,483.23 km) |
| Guymon to Cislago | 5,293.72 mi (8,519.41 km) |
| Guymon to Cisterna di Latina | 5,623.27 mi (9,049.78 km) |
| Guymon to Cisternino | 5,837.25 mi (9,394.15 km) |
| Guymon to Citta di Castello | 5,514.63 mi (8,874.93 km) |
| Guymon to Citta Sant'Angelo | 5,626.02 mi (9,054.21 km) |
| Guymon to Cittadella | 5,397.47 mi (8,686.39 km) |
| Guymon to Cittanova | 5,902.33 mi (9,498.89 km) |
