| Odorheiu Secuiesc to Oberriet | 745.97 mi (1,200.52 km) |
| Odorheiu Secuiesc to Obersiggenthal | 805.46 mi (1,296.26 km) |
| Odorheiu Secuiesc to Oberwil | 839.86 mi (1,351.62 km) |
| Odorheiu Secuiesc to Oberwingert | 783.19 mi (1,260.42 km) |
| Odorheiu Secuiesc to Oftringen | 823.23 mi (1,324.86 km) |
| Odorheiu Secuiesc to Olten | 823.95 mi (1,326.02 km) |
| Odorheiu Secuiesc to Onex | 915.25 mi (1,472.96 km) |
| Odorheiu Secuiesc to Opfikon | 792.67 mi (1,275.67 km) |
| Odorheiu Secuiesc to Ostermundigen | 844.41 mi (1,358.94 km) |
| Odorheiu Secuiesc to Payerne | 871.27 mi (1,402.17 km) |
| Odorheiu Secuiesc to Pfaffikon | 782.59 mi (1,259.46 km) |
| Odorheiu Secuiesc to Plan-les-Ouates | 914.61 mi (1,471.93 km) |
| Odorheiu Secuiesc to Pratteln | 833.07 mi (1,340.70 km) |
| Odorheiu Secuiesc to Prilly | 888.76 mi (1,430.32 km) |
| Odorheiu Secuiesc to Pully | 885.72 mi (1,425.43 km) |
