| Solothurn to Cehegin | 787.65 mi (1,267.60 km) |
| Solothurn to Cervello | 487.25 mi (784.16 km) |
| Solothurn to Cervera | 492.13 mi (792.01 km) |
| Solothurn to Ceuti | 772.78 mi (1,243.66 km) |
| Solothurn to Cheste | 674.66 mi (1,085.75 km) |
| Solothurn to Chiclana de la Frontera | 1,023.35 mi (1,646.92 km) |
| Solothurn to Chipiona | 1,016.50 mi (1,635.90 km) |
| Solothurn to Chiva | 676.20 mi (1,088.25 km) |
| Solothurn to Churriana de la Vega | 899.01 mi (1,446.81 km) |
| Solothurn to Ciempozuelos | 739.10 mi (1,189.47 km) |
| Solothurn to Cieza | 767.79 mi (1,235.64 km) |
| Solothurn to Cisterniga | 715.12 mi (1,150.88 km) |
| Solothurn to Ciudad de Melilla | 986.12 mi (1,587.01 km) |
| Solothurn to Ciudad Real | 809.13 mi (1,302.16 km) |
| Solothurn to Ciudad-Rodrigo | 834.67 mi (1,343.28 km) |
