| Trossingen to Opwijk | 282.38 mi (454.44 km) |
| Trossingen to Ostend | 335.64 mi (540.17 km) |
| Trossingen to Oud-Heverlee | 260.87 mi (419.82 km) |
| Trossingen to Oud-Turnhout | 277.05 mi (445.87 km) |
| Trossingen to Oudenaarde | 296.35 mi (476.92 km) |
| Trossingen to Oudenburg | 331.09 mi (532.83 km) |
| Trossingen to Oupeye | 226.25 mi (364.11 km) |
| Trossingen to Overijse | 262.59 mi (422.59 km) |
| Trossingen to Overpelt | 260.42 mi (419.10 km) |
| Trossingen to Paal | 256.89 mi (413.42 km) |
| Trossingen to Peer | 254.75 mi (409.98 km) |
| Trossingen to Pepinster | 213.85 mi (344.16 km) |
| Trossingen to Peruwelz | 283.24 mi (455.83 km) |
| Trossingen to Perwez | 246.08 mi (396.02 km) |
| Trossingen to Philippeville | 235.87 mi (379.59 km) |
