| Sumner to Cehegin | 5,493.77 mi (8,841.37 km) |
| Sumner to Cervello | 5,425.29 mi (8,731.16 km) |
| Sumner to Cervera | 5,389.57 mi (8,673.67 km) |
| Sumner to Ceuti | 5,511.53 mi (8,869.95 km) |
| Sumner to Cheste | 5,452.15 mi (8,774.39 km) |
| Sumner to Chiclana de la Frontera | 5,439.86 mi (8,754.61 km) |
| Sumner to Chipiona | 5,412.95 mi (8,711.31 km) |
| Sumner to Chiva | 5,451.50 mi (8,773.34 km) |
| Sumner to Churriana de la Vega | 5,484.90 mi (8,827.09 km) |
| Sumner to Ciempozuelos | 5,321.07 mi (8,563.43 km) |
| Sumner to Cieza | 5,497.89 mi (8,847.99 km) |
| Sumner to Cisterniga | 5,207.50 mi (8,380.66 km) |
| Sumner to Ciudad de Melilla | 5,611.44 mi (9,030.74 km) |
| Sumner to Ciudad Real | 5,375.61 mi (8,651.21 km) |
| Sumner to Ciudad-Rodrigo | 5,201.71 mi (8,371.35 km) |
