| Sulmona to Carson (California) | 6,381.68 mi (10,270.32 km) |
| Sulmona to Carson City (Nevada) | 6,118.63 mi (9,846.99 km) |
| Sulmona to Carteret (New Jersey) | 4,353.35 mi (7,006.04 km) |
| Sulmona to Cartersville (Georgia) | 5,083.02 mi (8,180.33 km) |
| Sulmona to Carthage (Missouri) | 5,343.83 mi (8,600.07 km) |
| Sulmona to Cary (Illinois) | 4,870.27 mi (7,837.94 km) |
| Sulmona to Cary (North Carolina) | 4,748.85 mi (7,642.53 km) |
| Sulmona to Casa de Oro-Mount Helix (California) | 6,401.95 mi (10,302.95 km) |
| Sulmona to Casa Grande (Arizona) | 6,217.77 mi (10,006.53 km) |
| Sulmona to Casas Adobes (Arizona) | 6,222.32 mi (10,013.85 km) |
| Sulmona to Cascades (Virginia) | 4,551.69 mi (7,325.24 km) |
| Sulmona to Casper (Wyoming) | 5,497.31 mi (8,847.06 km) |
| Sulmona to Casselberry (Florida) | 5,170.40 mi (8,320.95 km) |
| Sulmona to Castaic (California) | 6,356.26 mi (10,229.41 km) |
| Sulmona to Castle Pines (Colorado) | 5,624.28 mi (9,051.41 km) |
