| Oregon to Nyon | 4,217.59 mi (6,787.56 km) |
| Oregon to Oberriet | 4,316.93 mi (6,947.43 km) |
| Oregon to Obersiggenthal | 4,260.27 mi (6,856.25 km) |
| Oregon to Oberwil | 4,230.03 mi (6,807.58 km) |
| Oregon to Oberwingert | 4,278.03 mi (6,884.83 km) |
| Oregon to Oftringen | 4,251.58 mi (6,842.25 km) |
| Oregon to Olten | 4,249.70 mi (6,839.23 km) |
| Oregon to Onex | 4,219.35 mi (6,790.39 km) |
| Oregon to Opfikon | 4,273.11 mi (6,876.91 km) |
| Oregon to Ostermundigen | 4,247.67 mi (6,835.97 km) |
| Oregon to Payerne | 4,230.33 mi (6,808.05 km) |
| Oregon to Pfaffikon | 4,284.14 mi (6,894.65 km) |
| Oregon to Plan-les-Ouates | 4,220.63 mi (6,792.45 km) |
| Oregon to Pratteln | 4,235.70 mi (6,816.69 km) |
| Oregon to Prilly | 4,227.09 mi (6,802.84 km) |
