| Porsgrunn to Acqui Terme | 999.03 mi (1,607.79 km) |
| Porsgrunn to Acri | 1,386.60 mi (2,231.52 km) |
| Porsgrunn to Adelfia | 1,289.54 mi (2,075.31 km) |
| Porsgrunn to Adrano | 1,499.45 mi (2,413.13 km) |
| Porsgrunn to Adria | 976.75 mi (1,571.93 km) |
| Porsgrunn to Afragola | 1,273.21 mi (2,049.03 km) |
| Porsgrunn to Agliana | 1,052.71 mi (1,694.17 km) |
| Porsgrunn to Agrate Brianza | 935.11 mi (1,504.92 km) |
| Porsgrunn to Agrigento | 1,516.07 mi (2,439.87 km) |
| Porsgrunn to Agropoli | 1,316.80 mi (2,119.18 km) |
| Porsgrunn to Ala | 925.03 mi (1,488.69 km) |
| Porsgrunn to Alassio | 1,046.42 mi (1,684.05 km) |
| Porsgrunn to Alatri | 1,211.72 mi (1,950.08 km) |
| Porsgrunn to Alba | 998.50 mi (1,606.93 km) |
| Porsgrunn to Albano Laziale | 1,207.74 mi (1,943.67 km) |
