| Gaithersburg to Cervignano del Friuli | 4,381.75 mi (7,051.74 km) |
| Gaithersburg to Cesa | 4,593.59 mi (7,392.67 km) |
| Gaithersburg to Cesano Maderno | 4,211.02 mi (6,776.98 km) |
| Gaithersburg to Cesena | 4,393.61 mi (7,070.83 km) |
| Gaithersburg to Cesenatico | 4,397.93 mi (7,077.79 km) |
| Gaithersburg to Cetraro | 4,724.67 mi (7,603.63 km) |
| Gaithersburg to Cherasco | 4,187.16 mi (6,738.58 km) |
| Gaithersburg to Chiampo | 4,304.69 mi (6,927.73 km) |
| Gaithersburg to Chiaravalle | 4,459.23 mi (7,176.44 km) |
| Gaithersburg to Chiari | 4,246.14 mi (6,833.50 km) |
| Gaithersburg to Chiavari | 4,261.81 mi (6,858.73 km) |
| Gaithersburg to Chieri | 4,173.66 mi (6,716.86 km) |
| Gaithersburg to Chieti | 4,540.05 mi (7,306.51 km) |
| Gaithersburg to Chioggia | 4,358.00 mi (7,013.52 km) |
| Gaithersburg to Chiusi | 4,419.83 mi (7,113.03 km) |
