| Smarjeske Toplice to Oerlinghausen | 515.76 mi (830.04 km) |
| Smarjeske Toplice to Oestrich-Winkel | 439.53 mi (707.36 km) |
| Smarjeske Toplice to Offenburg | 386.55 mi (622.10 km) |
| Smarjeske Toplice to Oftersheim | 392.57 mi (631.78 km) |
| Smarjeske Toplice to Ohrdruf | 400.09 mi (643.89 km) |
| Smarjeske Toplice to Ohringen | 352.56 mi (567.40 km) |
| Smarjeske Toplice to Olbernhau | 343.10 mi (552.16 km) |
| Smarjeske Toplice to Olching | 244.70 mi (393.81 km) |
| Smarjeske Toplice to Oldenburg | 592.65 mi (953.78 km) |
| Smarjeske Toplice to Oldenburg in Holstein | 613.61 mi (987.51 km) |
| Smarjeske Toplice to Olfen | 538.77 mi (867.06 km) |
| Smarjeske Toplice to Olpe | 490.98 mi (790.15 km) |
| Smarjeske Toplice to Olsberg | 487.98 mi (785.32 km) |
| Smarjeske Toplice to Oranienburg | 484.47 mi (779.68 km) |
| Smarjeske Toplice to Ortenberg | 420.81 mi (677.23 km) |
