| Porsgrunn to Coldwater (Michigan) | 3,949.29 mi (6,355.76 km) |
| Porsgrunn to Colesville (Maryland) | 3,847.19 mi (6,191.46 km) |
| Porsgrunn to College (Alaska) | 3,790.71 mi (6,100.56 km) |
| Porsgrunn to College Park (Georgia) | 4,395.95 mi (7,074.59 km) |
| Porsgrunn to College Park (Maryland) | 3,849.13 mi (6,194.57 km) |
| Porsgrunn to College Station (Texas) | 4,950.52 mi (7,967.09 km) |
| Porsgrunn to Collegedale (Tennessee) | 4,334.91 mi (6,976.36 km) |
| Porsgrunn to Colleyville (Texas) | 4,840.65 mi (7,790.27 km) |
| Porsgrunn to Collierville (Tennessee) | 4,484.48 mi (7,217.08 km) |
| Porsgrunn to Collinsville (Illinois) | 4,287.31 mi (6,899.75 km) |
| Porsgrunn to Colonia (New Jersey) | 3,675.94 mi (5,915.85 km) |
| Porsgrunn to Colonial Heights (Virginia) | 3,958.94 mi (6,371.29 km) |
| Porsgrunn to Colonial Park (Pennsylvania) | 3,774.60 mi (6,074.63 km) |
| Porsgrunn to Colorado Springs (Colorado) | 4,705.24 mi (7,572.35 km) |
| Porsgrunn to Colton (California) | 5,322.35 mi (8,565.49 km) |
