| Porsgrunn to Cedar Rapids (Iowa) | 4,152.40 mi (6,682.63 km) |
| Porsgrunn to Cedarburg (Wisconsin) | 3,967.15 mi (6,384.52 km) |
| Porsgrunn to Celebration (Florida) | 4,602.02 mi (7,406.23 km) |
| Porsgrunn to Celina (Ohio) | 4,012.03 mi (6,456.74 km) |
| Porsgrunn to Celina (Texas) | 4,804.94 mi (7,732.80 km) |
| Porsgrunn to Centennial (Colorado) | 4,664.86 mi (7,507.36 km) |
| Porsgrunn to Center Point (Alabama) | 4,468.04 mi (7,190.61 km) |
| Porsgrunn to Centereach (New York) | 3,619.99 mi (5,825.82 km) |
| Porsgrunn to Centerton (Arkansas) | 4,551.67 mi (7,325.21 km) |
| Porsgrunn to Centerville (Ohio) | 4,049.59 mi (6,517.18 km) |
| Porsgrunn to Centerville (Utah) | 4,764.58 mi (7,667.85 km) |
| Porsgrunn to Central (Louisiana) | 4,786.30 mi (7,702.81 km) |
| Porsgrunn to Central Falls (Rhode Island) | 3,509.47 mi (5,647.94 km) |
| Porsgrunn to Central Islip (New York) | 3,628.24 mi (5,839.09 km) |
| Porsgrunn to Central Point (Oregon) | 4,921.99 mi (7,921.18 km) |
