| Bilbao to Cernavoda | 1,536.48 mi (2,472.72 km) |
| Bilbao to Chitila | 1,434.57 mi (2,308.71 km) |
| Bilbao to Cisnadie | 1,338.84 mi (2,154.65 km) |
| Bilbao to Cluj-Napoca | 1,310.75 mi (2,109.45 km) |
| Bilbao to Codlea | 1,401.20 mi (2,255.02 km) |
| Bilbao to Comanesti | 1,447.05 mi (2,328.80 km) |
| Bilbao to Comarnic | 1,412.59 mi (2,273.34 km) |
| Bilbao to Constanta | 1,567.58 mi (2,522.77 km) |
| Bilbao to Corabia | 1,368.41 mi (2,202.24 km) |
| Bilbao to Costesti | 1,379.45 mi (2,220.01 km) |
| Bilbao to Covasna | 1,436.26 mi (2,311.44 km) |
| Bilbao to Craiova | 1,329.77 mi (2,140.05 km) |
| Bilbao to Cristuru Secuiesc | 1,379.91 mi (2,220.75 km) |
| Bilbao to Cugir | 1,300.61 mi (2,093.12 km) |
| Bilbao to Cumpana | 1,564.36 mi (2,517.59 km) |
