| Porsgrunn to Tours | 889.78 mi (1,431.96 km) |
| Porsgrunn to Trappes | 778.83 mi (1,253.40 km) |
| Porsgrunn to Treillieres | 936.76 mi (1,507.57 km) |
| Porsgrunn to Trelaze | 906.98 mi (1,459.64 km) |
| Porsgrunn to Trets | 1,095.99 mi (1,763.82 km) |
| Porsgrunn to Triel-sur-Seine | 765.64 mi (1,232.17 km) |
| Porsgrunn to Troyes | 781.30 mi (1,257.38 km) |
| Porsgrunn to Tulle | 1,012.59 mi (1,629.60 km) |
| Porsgrunn to Urrugne | 1,191.28 mi (1,917.17 km) |
| Porsgrunn to Ussel | 986.69 mi (1,587.92 km) |
| Porsgrunn to Vaires-sur-Marne | 762.68 mi (1,227.42 km) |
| Porsgrunn to Valbonne | 1,075.27 mi (1,730.48 km) |
| Porsgrunn to Valence | 1,000.44 mi (1,610.05 km) |
| Porsgrunn to Valenciennes | 652.81 mi (1,050.60 km) |
| Porsgrunn to Valentigney | 813.68 mi (1,309.50 km) |
