| Lake Ronkonkoma to Cortona | 4,167.32 mi (6,706.65 km) |
| Lake Ronkonkoma to Cosenza | 4,499.77 mi (7,241.68 km) |
| Lake Ronkonkoma to Cossato | 3,926.32 mi (6,318.80 km) |
| Lake Ronkonkoma to Costa Volpino | 4,001.03 mi (6,439.04 km) |
| Lake Ronkonkoma to Creazzo | 4,069.68 mi (6,549.52 km) |
| Lake Ronkonkoma to Crema | 3,998.03 mi (6,434.20 km) |
| Lake Ronkonkoma to Cremona | 4,020.60 mi (6,470.53 km) |
| Lake Ronkonkoma to Crevalcore | 4,082.34 mi (6,569.90 km) |
| Lake Ronkonkoma to Crispiano | 4,493.70 mi (7,231.92 km) |
| Lake Ronkonkoma to Crosia | 4,512.56 mi (7,262.27 km) |
| Lake Ronkonkoma to Crotone | 4,546.68 mi (7,317.18 km) |
| Lake Ronkonkoma to Cuneo | 3,936.38 mi (6,335.00 km) |
| Lake Ronkonkoma to Cuorgne | 3,909.40 mi (6,291.58 km) |
| Lake Ronkonkoma to Cusano Milanino | 3,970.69 mi (6,390.20 km) |
| Lake Ronkonkoma to Cutro | 4,542.66 mi (7,310.70 km) |
