| Widnes to Cernavoda | 1,515.97 mi (2,439.72 km) |
| Widnes to Chitila | 1,426.64 mi (2,295.96 km) |
| Widnes to Cisnadie | 1,305.89 mi (2,101.62 km) |
| Widnes to Cluj-Napoca | 1,243.98 mi (2,001.99 km) |
| Widnes to Codlea | 1,358.60 mi (2,186.46 km) |
| Widnes to Comanesti | 1,372.53 mi (2,208.87 km) |
| Widnes to Comarnic | 1,383.38 mi (2,226.34 km) |
| Widnes to Constanta | 1,547.03 mi (2,489.71 km) |
| Widnes to Corabia | 1,398.25 mi (2,250.26 km) |
| Widnes to Costesti | 1,376.09 mi (2,214.61 km) |
| Widnes to Covasna | 1,382.91 mi (2,225.58 km) |
| Widnes to Craiova | 1,347.67 mi (2,168.87 km) |
| Widnes to Cristuru Secuiesc | 1,319.97 mi (2,124.29 km) |
| Widnes to Cugir | 1,269.29 mi (2,042.73 km) |
| Widnes to Cumpana | 1,546.06 mi (2,488.15 km) |
