| Portishead to Castle Rock (Colorado) | 4,608.48 mi (7,416.63 km) |
| Portishead to Castro Valley (California) | 5,269.23 mi (8,480.00 km) |
| Portishead to Catalina Foothills (Arizona) | 5,199.93 mi (8,368.48 km) |
| Portishead to Cataño (Puerto Rico) | 4,089.81 mi (6,581.92 km) |
| Portishead to Cathedral City (California) | 5,308.81 mi (8,543.70 km) |
| Portishead to Catonsville (Maryland) | 3,529.14 mi (5,679.60 km) |
| Portishead to Cave Spring (Virginia) | 3,755.30 mi (6,043.58 km) |
| Portishead to Cayce (South Carolina) | 3,951.46 mi (6,359.26 km) |
| Portishead to Cayey (Puerto Rico) | 4,107.60 mi (6,610.55 km) |
| Portishead to Cedar City (Utah) | 4,982.89 mi (8,019.18 km) |
| Portishead to Cedar Falls (Iowa) | 4,001.07 mi (6,439.10 km) |
| Portishead to Cedar Hill (Texas) | 4,662.72 mi (7,503.92 km) |
| Portishead to Cedar Lake (Indiana) | 3,863.06 mi (6,217.00 km) |
| Portishead to Cedar Mill (Oregon) | 4,844.79 mi (7,796.94 km) |
| Portishead to Cedar Park (Texas) | 4,803.09 mi (7,729.82 km) |
