| Olhao to Oberriet | 1,135.75 mi (1,827.82 km) |
| Olhao to Obersiggenthal | 1,092.91 mi (1,758.87 km) |
| Olhao to Oberwil | 1,066.28 mi (1,716.01 km) |
| Olhao to Oberwingert | 1,112.33 mi (1,790.11 km) |
| Olhao to Oftringen | 1,071.79 mi (1,724.88 km) |
| Olhao to Olten | 1,072.51 mi (1,726.03 km) |
| Olhao to Onex | 956.15 mi (1,538.78 km) |
| Olhao to Opfikon | 1,101.27 mi (1,772.32 km) |
| Olhao to Ostermundigen | 1,040.89 mi (1,675.15 km) |
| Olhao to Payerne | 1,014.04 mi (1,631.94 km) |
| Olhao to Pfaffikon | 1,107.01 mi (1,781.56 km) |
| Olhao to Plan-les-Ouates | 956.11 mi (1,538.72 km) |
| Olhao to Pratteln | 1,071.83 mi (1,724.94 km) |
| Olhao to Prilly | 989.70 mi (1,592.76 km) |
| Olhao to Pully | 991.57 mi (1,595.78 km) |
