| Porsgrunn to Preveza | 1,475.57 mi (2,374.70 km) |
| Porsgrunn to Psychiko | 1,586.13 mi (2,552.62 km) |
| Porsgrunn to Ptolemaida | 1,386.58 mi (2,231.48 km) |
| Porsgrunn to Pylaia | 1,403.32 mi (2,258.42 km) |
| Porsgrunn to Pyrgos | 1,571.18 mi (2,528.58 km) |
| Porsgrunn to Rafina | 1,589.72 mi (2,558.41 km) |
| Porsgrunn to Rethymno | 1,771.69 mi (2,851.27 km) |
| Porsgrunn to Rodos | 1,773.27 mi (2,853.80 km) |
| Porsgrunn to Salamina | 1,584.31 mi (2,549.70 km) |
| Porsgrunn to Serres | 1,382.37 mi (2,224.71 km) |
| Porsgrunn to Sindos | 1,395.57 mi (2,245.96 km) |
| Porsgrunn to Siteia | 1,811.68 mi (2,915.61 km) |
| Porsgrunn to Skillounta | 1,577.48 mi (2,538.71 km) |
| Porsgrunn to Sparti | 1,625.67 mi (2,616.26 km) |
| Porsgrunn to Spata | 1,591.53 mi (2,561.32 km) |
