| Upper Montclair to Cortona | 4,214.15 mi (6,782.03 km) |
| Upper Montclair to Cosenza | 4,547.64 mi (7,318.73 km) |
| Upper Montclair to Cossato | 3,972.69 mi (6,393.42 km) |
| Upper Montclair to Costa Volpino | 4,046.81 mi (6,512.72 km) |
| Upper Montclair to Creazzo | 4,115.32 mi (6,622.97 km) |
| Upper Montclair to Crema | 4,044.18 mi (6,508.48 km) |
| Upper Montclair to Cremona | 4,066.81 mi (6,544.90 km) |
| Upper Montclair to Crevalcore | 4,128.55 mi (6,644.26 km) |
| Upper Montclair to Crispiano | 4,540.67 mi (7,307.51 km) |
| Upper Montclair to Crosia | 4,560.18 mi (7,338.89 km) |
| Upper Montclair to Crotone | 4,594.44 mi (7,394.04 km) |
| Upper Montclair to Cuneo | 3,983.59 mi (6,410.97 km) |
| Upper Montclair to Cuorgne | 3,955.99 mi (6,366.55 km) |
| Upper Montclair to Cusano Milanino | 4,016.84 mi (6,464.48 km) |
| Upper Montclair to Cutro | 4,590.48 mi (7,387.66 km) |
