| Sliven to Calafell | 1,272.25 mi (2,047.48 km) |
| Sliven to Calahorra | 1,435.29 mi (2,309.87 km) |
| Sliven to Calasparra | 1,498.26 mi (2,411.21 km) |
| Sliven to Calatayud | 1,432.00 mi (2,304.58 km) |
| Sliven to Caldas de Montbuy | 1,235.64 mi (1,988.57 km) |
| Sliven to Caldas de Reyes | 1,764.52 mi (2,839.72 km) |
| Sliven to Calella | 1,210.72 mi (1,948.46 km) |
| Sliven to Callosa de Segura | 1,459.31 mi (2,348.54 km) |
| Sliven to Calpe | 1,399.80 mi (2,252.76 km) |
| Sliven to Calvia | 1,254.39 mi (2,018.74 km) |
| Sliven to Camas | 1,739.26 mi (2,799.07 km) |
| Sliven to Cambados | 1,774.08 mi (2,855.11 km) |
| Sliven to Cambre | 1,740.05 mi (2,800.34 km) |
| Sliven to Cambrils | 1,300.33 mi (2,092.68 km) |
| Sliven to Campo de Criptana | 1,543.40 mi (2,483.86 km) |
