| Quincy to Castrovillari | 4,334.45 mi (6,975.63 km) |
| Quincy to Catania | 4,374.29 mi (7,039.73 km) |
| Quincy to Catanzaro | 4,387.58 mi (7,061.14 km) |
| Quincy to Cattolica | 4,031.40 mi (6,487.91 km) |
| Quincy to Cava de' Tirreni | 4,234.86 mi (6,815.34 km) |
| Quincy to Cavallino | 4,402.75 mi (7,085.54 km) |
| Quincy to Cavarzere | 3,963.46 mi (6,378.57 km) |
| Quincy to Cave | 4,116.14 mi (6,624.29 km) |
| Quincy to Cavriago | 3,911.82 mi (6,295.46 km) |
| Quincy to Cavriglia | 3,992.92 mi (6,425.99 km) |
| Quincy to Cazzago San Martino | 3,861.12 mi (6,213.87 km) |
| Quincy to Ceccano | 4,142.77 mi (6,667.14 km) |
| Quincy to Cecina | 3,957.62 mi (6,369.17 km) |
| Quincy to Cefalu | 4,305.07 mi (6,928.33 km) |
| Quincy to Ceglie Messapico | 4,359.38 mi (7,015.74 km) |
