| Upper Grand Lagoon to Cortona | 5,177.76 mi (8,332.80 km) |
| Upper Grand Lagoon to Cosenza | 5,504.67 mi (8,858.91 km) |
| Upper Grand Lagoon to Cossato | 4,938.89 mi (7,948.38 km) |
| Upper Grand Lagoon to Costa Volpino | 5,015.60 mi (8,071.83 km) |
| Upper Grand Lagoon to Creazzo | 5,084.63 mi (8,182.92 km) |
| Upper Grand Lagoon to Crema | 5,011.32 mi (8,064.94 km) |
| Upper Grand Lagoon to Cremona | 5,033.65 mi (8,100.88 km) |
| Upper Grand Lagoon to Crevalcore | 5,095.38 mi (8,200.22 km) |
| Upper Grand Lagoon to Crispiano | 5,503.23 mi (8,856.59 km) |
| Upper Grand Lagoon to Crosia | 5,518.89 mi (8,881.80 km) |
| Upper Grand Lagoon to Crotone | 5,552.17 mi (8,935.35 km) |
| Upper Grand Lagoon to Cuneo | 4,945.43 mi (7,958.89 km) |
| Upper Grand Lagoon to Cuorgne | 4,921.14 mi (7,919.81 km) |
| Upper Grand Lagoon to Cusano Milanino | 4,984.00 mi (8,020.97 km) |
| Upper Grand Lagoon to Cutro | 5,547.82 mi (8,928.35 km) |
