| Romilly-sur-Seine to Oberriet | 282.75 mi (455.04 km) |
| Romilly-sur-Seine to Obersiggenthal | 222.67 mi (358.36 km) |
| Romilly-sur-Seine to Oberwil | 189.97 mi (305.72 km) |
| Romilly-sur-Seine to Oberwingert | 242.99 mi (391.06 km) |
| Romilly-sur-Seine to Oftringen | 210.94 mi (339.47 km) |
| Romilly-sur-Seine to Olten | 209.28 mi (336.80 km) |
| Romilly-sur-Seine to Onex | 195.72 mi (314.98 km) |
| Romilly-sur-Seine to Opfikon | 235.99 mi (379.79 km) |
| Romilly-sur-Seine to Ostermundigen | 205.39 mi (330.55 km) |
| Romilly-sur-Seine to Payerne | 189.82 mi (305.49 km) |
| Romilly-sur-Seine to Pfaffikon | 247.09 mi (397.65 km) |
| Romilly-sur-Seine to Plan-les-Ouates | 197.12 mi (317.23 km) |
| Romilly-sur-Seine to Pratteln | 196.15 mi (315.68 km) |
| Romilly-sur-Seine to Prilly | 191.64 mi (308.41 km) |
| Romilly-sur-Seine to Pully | 194.65 mi (313.26 km) |
