| Porsgrunn to Talant | 836.29 mi (1,345.87 km) |
| Porsgrunn to Talence | 1,078.99 mi (1,736.46 km) |
| Porsgrunn to Tarare | 939.23 mi (1,511.54 km) |
| Porsgrunn to Tarascon | 1,079.21 mi (1,736.83 km) |
| Porsgrunn to Tarbes | 1,171.55 mi (1,885.42 km) |
| Porsgrunn to Tarnos | 1,175.61 mi (1,891.95 km) |
| Porsgrunn to Tassin-la-Demi-Lune | 944.95 mi (1,520.75 km) |
| Porsgrunn to Taverny | 759.14 mi (1,221.71 km) |
| Porsgrunn to Tergnier | 702.07 mi (1,129.87 km) |
| Porsgrunn to Thaon-les-Vosges | 762.45 mi (1,227.04 km) |
| Porsgrunn to Thiais | 773.52 mi (1,244.86 km) |
| Porsgrunn to Thiers | 951.12 mi (1,530.68 km) |
| Porsgrunn to Thionville | 688.87 mi (1,108.63 km) |
| Porsgrunn to Thonon-les-Bains | 891.21 mi (1,434.26 km) |
| Porsgrunn to Thorigne-Fouillard | 884.42 mi (1,423.33 km) |
