| Upper Grand Lagoon to Cividale del Friuli | 5,150.33 mi (8,288.65 km) |
| Upper Grand Lagoon to Civita Castellana | 5,228.18 mi (8,413.94 km) |
| Upper Grand Lagoon to Civitanova Marche | 5,254.47 mi (8,456.25 km) |
| Upper Grand Lagoon to Civitavecchia | 5,206.88 mi (8,379.66 km) |
| Upper Grand Lagoon to Civitella in Val di Chiana | 5,161.17 mi (8,306.09 km) |
| Upper Grand Lagoon to Clusone | 5,007.55 mi (8,058.88 km) |
| Upper Grand Lagoon to Coccaglio | 5,018.34 mi (8,076.24 km) |
| Upper Grand Lagoon to Codigoro | 5,134.02 mi (8,262.40 km) |
| Upper Grand Lagoon to Codogno | 5,018.44 mi (8,076.40 km) |
| Upper Grand Lagoon to Codroipo | 5,135.41 mi (8,264.65 km) |
| Upper Grand Lagoon to Cogoleto | 4,994.36 mi (8,037.64 km) |
| Upper Grand Lagoon to Colle di Val d'Elsa | 5,135.63 mi (8,264.99 km) |
| Upper Grand Lagoon to Colle Salvetti | 5,100.32 mi (8,208.16 km) |
| Upper Grand Lagoon to Collecchio | 5,053.30 mi (8,132.50 km) |
| Upper Grand Lagoon to Colleferro | 5,274.00 mi (8,487.68 km) |
