| Porsgrunn to Culpeper (Virginia) | 3,913.17 mi (6,297.64 km) |
| Porsgrunn to Culver City (California) | 5,350.95 mi (8,611.52 km) |
| Porsgrunn to Cumberland (Maryland) | 3,873.97 mi (6,234.56 km) |
| Porsgrunn to Cupertino (California) | 5,224.67 mi (8,408.29 km) |
| Porsgrunn to Cutler Bay (Florida) | 4,717.43 mi (7,591.97 km) |
| Porsgrunn to Cutlerville (Michigan) | 3,921.34 mi (6,310.79 km) |
| Porsgrunn to Cuyahoga Falls (Ohio) | 3,881.66 mi (6,246.93 km) |
| Porsgrunn to Cypress (California) | 5,354.30 mi (8,616.91 km) |
| Porsgrunn to Cypress Gardens (Florida) | 4,624.17 mi (7,441.89 km) |
| Porsgrunn to Cypress Lake (Florida) | 4,715.64 mi (7,589.08 km) |
| Porsgrunn to D'Iberville (Mississippi) | 4,722.45 mi (7,600.04 km) |
| Porsgrunn to Dakota Ridge (Colorado) | 4,670.44 mi (7,516.35 km) |
| Porsgrunn to Dale City (Virginia) | 3,881.78 mi (6,247.12 km) |
| Porsgrunn to Dallas (Georgia) | 4,392.53 mi (7,069.09 km) |
| Porsgrunn to Dallas (Oregon) | 4,768.86 mi (7,674.73 km) |
