| Rio Grande City to Clacton-on-Sea | 5,204.86 mi (8,376.41 km) |
| Rio Grande City to Clay Cross | 5,068.64 mi (8,157.19 km) |
| Rio Grande City to Clayton | 5,037.50 mi (8,107.07 km) |
| Rio Grande City to Clayton le Moors | 5,015.98 mi (8,072.43 km) |
| Rio Grande City to Cleckheaton | 5,042.54 mi (8,115.18 km) |
| Rio Grande City to Cleethorpes | 5,111.38 mi (8,225.97 km) |
| Rio Grande City to Clevedon | 5,056.18 mi (8,137.14 km) |
| Rio Grande City to Clifton | 5,084.47 mi (8,182.67 km) |
| Rio Grande City to Clifton | 5,059.70 mi (8,142.80 km) |
| Rio Grande City to Cliftonville | 5,226.48 mi (8,411.21 km) |
| Rio Grande City to Clitheroe | 5,013.30 mi (8,068.12 km) |
| Rio Grande City to Clydebank | 4,890.33 mi (7,870.22 km) |
| Rio Grande City to Coalville | 5,081.75 mi (8,178.28 km) |
| Rio Grande City to Coatbridge | 4,904.87 mi (7,893.62 km) |
| Rio Grande City to Cobham | 5,156.57 mi (8,298.69 km) |
