| Houthulst to Oberriet | 391.42 mi (629.93 km) |
| Houthulst to Obersiggenthal | 340.82 mi (548.49 km) |
| Houthulst to Oberwil | 316.79 mi (509.82 km) |
| Houthulst to Oberwingert | 354.86 mi (571.09 km) |
| Houthulst to Oftringen | 338.05 mi (544.03 km) |
| Houthulst to Olten | 335.78 mi (540.38 km) |
| Houthulst to Onex | 361.14 mi (581.20 km) |
| Houthulst to Opfikon | 352.33 mi (567.01 km) |
| Houthulst to Ostermundigen | 345.78 mi (556.47 km) |
| Houthulst to Payerne | 339.60 mi (546.53 km) |
| Houthulst to Pfaffikon | 362.68 mi (583.68 km) |
| Houthulst to Plan-les-Ouates | 362.51 mi (583.40 km) |
| Houthulst to Pratteln | 320.95 mi (516.51 km) |
| Houthulst to Prilly | 349.12 mi (561.85 km) |
| Houthulst to Pully | 351.59 mi (565.83 km) |
