| Sliven to Cervello | 1,249.56 mi (2,010.98 km) |
| Sliven to Cervera | 1,280.54 mi (2,060.83 km) |
| Sliven to Ceuti | 1,480.30 mi (2,382.32 km) |
| Sliven to Cheste | 1,418.19 mi (2,282.35 km) |
| Sliven to Chiclana de la Frontera | 1,772.07 mi (2,851.87 km) |
| Sliven to Chipiona | 1,777.59 mi (2,860.75 km) |
| Sliven to Chiva | 1,420.15 mi (2,285.52 km) |
| Sliven to Churriana de la Vega | 1,625.02 mi (2,615.22 km) |
| Sliven to Ciempozuelos | 1,553.37 mi (2,499.91 km) |
| Sliven to Cieza | 1,483.78 mi (2,387.92 km) |
| Sliven to Cisterniga | 1,581.60 mi (2,545.34 km) |
| Sliven to Ciudad de Melilla | 1,644.04 mi (2,645.82 km) |
| Sliven to Ciudad Real | 1,593.16 mi (2,563.95 km) |
| Sliven to Ciudad-Rodrigo | 1,692.78 mi (2,724.26 km) |
| Sliven to Cocentaina | 1,422.07 mi (2,288.59 km) |
