| Galveston to Collegno | 5,368.73 mi (8,640.14 km) |
| Galveston to Cologno al Serio | 5,440.84 mi (8,756.18 km) |
| Galveston to Cologno Monzese | 5,425.17 mi (8,730.96 km) |
| Galveston to Colorno | 5,492.40 mi (8,839.16 km) |
| Galveston to Comacchio | 5,575.92 mi (8,973.57 km) |
| Galveston to Comiso | 5,976.57 mi (9,618.36 km) |
| Galveston to Como | 5,407.35 mi (8,702.29 km) |
| Galveston to Concordia Sagittaria | 5,563.74 mi (8,953.98 km) |
| Galveston to Concorezzo | 5,425.44 mi (8,731.40 km) |
| Galveston to Conegliano | 5,536.84 mi (8,910.68 km) |
| Galveston to Conselice | 5,568.10 mi (8,961.00 km) |
| Galveston to Conselve | 5,543.20 mi (8,920.92 km) |
| Galveston to Conversano | 5,927.37 mi (9,539.18 km) |
| Galveston to Copertino | 5,995.42 mi (9,648.69 km) |
| Galveston to Copparo | 5,554.04 mi (8,938.36 km) |
