| Sliven to Castelo Branco | 1,756.83 mi (2,827.35 km) |
| Sliven to Castro Daire | 1,757.40 mi (2,828.26 km) |
| Sliven to Celorico de Basto | 1,752.11 mi (2,819.75 km) |
| Sliven to Chamusca | 1,816.62 mi (2,923.57 km) |
| Sliven to Chaves | 1,719.60 mi (2,767.42 km) |
| Sliven to Cinfaes | 1,763.81 mi (2,838.58 km) |
| Sliven to Coimbra | 1,795.70 mi (2,889.89 km) |
| Sliven to Condeixa-a-Nova | 1,801.18 mi (2,898.72 km) |
| Sliven to Corroios | 1,867.30 mi (3,005.12 km) |
| Sliven to Coruche | 1,827.68 mi (2,941.37 km) |
| Sliven to Costa de Caparica | 1,870.89 mi (3,010.90 km) |
| Sliven to Covilha | 1,747.34 mi (2,812.08 km) |
| Sliven to Eiras | 1,794.81 mi (2,888.47 km) |
| Sliven to Elvas | 1,759.94 mi (2,832.34 km) |
| Sliven to Entroncamento | 1,813.32 mi (2,918.26 km) |
