| Porsgrunn to Trim | 736.70 mi (1,185.60 km) |
| Porsgrunn to Tuam | 805.90 mi (1,296.96 km) |
| Porsgrunn to Tullamore | 771.94 mi (1,242.32 km) |
| Porsgrunn to Waterford | 805.50 mi (1,296.33 km) |
| Porsgrunn to Wexford | 781.07 mi (1,257.00 km) |
| Porsgrunn to Wicklow | 737.99 mi (1,187.69 km) |
| Porsgrunn to Abano Terme | 954.35 mi (1,535.87 km) |
| Porsgrunn to Abbiategrasso | 948.23 mi (1,526.03 km) |
| Porsgrunn to Acate | 1,540.66 mi (2,479.46 km) |
| Porsgrunn to Acerra | 1,271.27 mi (2,045.91 km) |
| Porsgrunn to Aci Castello | 1,509.24 mi (2,428.89 km) |
| Porsgrunn to Aci Catena | 1,506.11 mi (2,423.85 km) |
| Porsgrunn to Aci Sant'Antonio | 1,505.99 mi (2,423.66 km) |
| Porsgrunn to Acireale | 1,505.21 mi (2,422.40 km) |
| Porsgrunn to Acquaviva delle Fonti | 1,296.14 mi (2,085.93 km) |
