| Porsgrunn to Flemalle-Haute | 611.75 mi (984.52 km) |
| Porsgrunn to Fleron | 608.38 mi (979.09 km) |
| Porsgrunn to Fleurus | 630.60 mi (1,014.85 km) |
| Porsgrunn to Florennes | 645.05 mi (1,038.11 km) |
| Porsgrunn to Fontaine-l'Eveque | 637.82 mi (1,026.47 km) |
| Porsgrunn to Forest | 611.65 mi (984.35 km) |
| Porsgrunn to Frameries | 644.18 mi (1,036.70 km) |
| Porsgrunn to Galmaarden | 620.80 mi (999.07 km) |
| Porsgrunn to Ganshoren | 608.24 mi (978.87 km) |
| Porsgrunn to Gavere | 613.33 mi (987.05 km) |
| Porsgrunn to Geel | 579.50 mi (932.62 km) |
| Porsgrunn to Gembloux | 623.18 mi (1,002.91 km) |
| Porsgrunn to Genappe | 623.98 mi (1,004.20 km) |
| Porsgrunn to Genk | 586.90 mi (944.53 km) |
| Porsgrunn to Gent | 604.65 mi (973.09 km) |
