| Portishead to Carson (California) | 5,368.43 mi (8,639.66 km) |
| Portishead to Carson City (Nevada) | 5,116.04 mi (8,233.47 km) |
| Portishead to Carteret (New Jersey) | 3,368.21 mi (5,420.61 km) |
| Portishead to Cartersville (Georgia) | 4,096.23 mi (6,592.24 km) |
| Portishead to Carthage (Missouri) | 4,330.56 mi (6,969.36 km) |
| Portishead to Cary (Illinois) | 3,855.80 mi (6,205.31 km) |
| Portishead to Cary (North Carolina) | 3,772.79 mi (6,071.72 km) |
| Portishead to Casa de Oro-Mount Helix (California) | 5,385.98 mi (8,667.90 km) |
| Portishead to Casa Grande (Arizona) | 5,198.19 mi (8,365.68 km) |
| Portishead to Casas Adobes (Arizona) | 5,202.43 mi (8,372.50 km) |
| Portishead to Cascades (Virginia) | 3,565.33 mi (5,737.84 km) |
| Portishead to Casper (Wyoming) | 4,480.68 mi (7,210.95 km) |
| Portishead to Casselberry (Florida) | 4,219.80 mi (6,791.12 km) |
| Portishead to Castaic (California) | 5,344.34 mi (8,600.89 km) |
| Portishead to Castle Pines (Colorado) | 4,604.63 mi (7,410.43 km) |
