| Porsgrunn to Paiania | 1,591.45 mi (2,561.20 km) |
| Porsgrunn to Palaio Faliro | 1,589.94 mi (2,558.76 km) |
| Porsgrunn to Pallini | 1,588.76 mi (2,556.87 km) |
| Porsgrunn to Panorama | 1,405.29 mi (2,261.60 km) |
| Porsgrunn to Papagos | 1,587.85 mi (2,555.39 km) |
| Porsgrunn to Patra | 1,536.96 mi (2,473.50 km) |
| Porsgrunn to Pefka | 1,400.07 mi (2,253.19 km) |
| Porsgrunn to Pefki | 1,582.94 mi (2,547.50 km) |
| Porsgrunn to Peraia | 1,408.78 mi (2,267.22 km) |
| Porsgrunn to Perama | 1,585.45 mi (2,551.54 km) |
| Porsgrunn to Peristeri | 1,584.19 mi (2,549.50 km) |
| Porsgrunn to Petroupoli | 1,583.10 mi (2,547.75 km) |
| Porsgrunn to Piraeus | 1,588.39 mi (2,556.26 km) |
| Porsgrunn to Polygyros | 1,426.02 mi (2,294.97 km) |
| Porsgrunn to Porto Rafti | 1,598.59 mi (2,572.69 km) |
