| East Islip to Cividale del Friuli | 4,140.59 mi (6,663.64 km) |
| East Islip to Civita Castellana | 4,226.94 mi (6,802.60 km) |
| East Islip to Civitanova Marche | 4,249.56 mi (6,839.01 km) |
| East Islip to Civitavecchia | 4,206.82 mi (6,770.22 km) |
| East Islip to Civitella in Val di Chiana | 4,157.84 mi (6,691.39 km) |
| East Islip to Clusone | 4,000.30 mi (6,437.86 km) |
| East Islip to Coccaglio | 4,011.70 mi (6,456.21 km) |
| East Islip to Codigoro | 4,127.28 mi (6,642.21 km) |
| East Islip to Codogno | 4,012.84 mi (6,458.05 km) |
| East Islip to Codroipo | 4,126.13 mi (6,640.37 km) |
| East Islip to Cogoleto | 3,991.45 mi (6,423.62 km) |
| East Islip to Colle di Val d'Elsa | 4,132.89 mi (6,651.24 km) |
| East Islip to Colle Salvetti | 4,097.70 mi (6,594.61 km) |
| East Islip to Collecchio | 4,048.20 mi (6,514.95 km) |
| East Islip to Colleferro | 4,273.56 mi (6,877.63 km) |
