| Oristano to Carson (California) | 6,316.88 mi (10,166.04 km) |
| Oristano to Carson City (Nevada) | 6,075.73 mi (9,777.95 km) |
| Oristano to Carteret (New Jersey) | 4,190.37 mi (6,743.74 km) |
| Oristano to Cartersville (Georgia) | 4,917.62 mi (7,914.14 km) |
| Oristano to Carthage (Missouri) | 5,214.92 mi (8,392.60 km) |
| Oristano to Cary (Illinois) | 4,746.25 mi (7,638.36 km) |
| Oristano to Cary (North Carolina) | 4,575.42 mi (7,363.43 km) |
| Oristano to Casa de Oro-Mount Helix (California) | 6,329.10 mi (10,185.70 km) |
| Oristano to Casa Grande (Arizona) | 6,127.04 mi (9,860.52 km) |
| Oristano to Casas Adobes (Arizona) | 6,127.14 mi (9,860.67 km) |
| Oristano to Cascades (Virginia) | 4,388.72 mi (7,062.96 km) |
| Oristano to Casper (Wyoming) | 5,424.11 mi (8,729.26 km) |
| Oristano to Casselberry (Florida) | 4,975.93 mi (8,007.99 km) |
| Oristano to Castaic (California) | 6,294.85 mi (10,130.58 km) |
| Oristano to Castle Pines (Colorado) | 5,534.32 mi (8,906.62 km) |
