| Rio Grande City to Collegno | 5,678.06 mi (9,137.95 km) |
| Rio Grande City to Cologno al Serio | 5,749.35 mi (9,252.69 km) |
| Rio Grande City to Cologno Monzese | 5,733.83 mi (9,227.70 km) |
| Rio Grande City to Colorno | 5,801.14 mi (9,336.03 km) |
| Rio Grande City to Comacchio | 5,884.31 mi (9,469.88 km) |
| Rio Grande City to Comiso | 6,287.61 mi (10,118.92 km) |
| Rio Grande City to Como | 5,715.88 mi (9,198.82 km) |
| Rio Grande City to Concordia Sagittaria | 5,871.21 mi (9,448.80 km) |
| Rio Grande City to Concorezzo | 5,734.05 mi (9,228.06 km) |
| Rio Grande City to Conegliano | 5,844.39 mi (9,405.64 km) |
| Rio Grande City to Conselice | 5,876.70 mi (9,457.64 km) |
| Rio Grande City to Conselve | 5,851.34 mi (9,416.81 km) |
| Rio Grande City to Conversano | 6,236.48 mi (10,036.65 km) |
| Rio Grande City to Copertino | 6,304.62 mi (10,146.30 km) |
| Rio Grande City to Copparo | 5,862.40 mi (9,434.62 km) |
