| Grosuplje to Opwijk | 590.84 mi (950.86 km) |
| Grosuplje to Ostend | 647.13 mi (1,041.45 km) |
| Grosuplje to Oud-Heverlee | 568.10 mi (914.26 km) |
| Grosuplje to Oud-Turnhout | 575.63 mi (926.38 km) |
| Grosuplje to Oudenaarde | 608.60 mi (979.44 km) |
| Grosuplje to Oudenburg | 642.64 mi (1,034.23 km) |
| Grosuplje to Oupeye | 527.82 mi (849.44 km) |
| Grosuplje to Overijse | 571.19 mi (919.24 km) |
| Grosuplje to Overpelt | 556.48 mi (895.56 km) |
| Grosuplje to Paal | 557.75 mi (897.61 km) |
| Grosuplje to Peer | 551.71 mi (887.89 km) |
| Grosuplje to Pepinster | 515.99 mi (830.40 km) |
| Grosuplje to Peruwelz | 598.25 mi (962.80 km) |
| Grosuplje to Perwez | 554.92 mi (893.05 km) |
| Grosuplje to Philippeville | 550.35 mi (885.71 km) |
