| Rudolstadt to Oerlinghausen | 143.67 mi (231.21 km) |
| Rudolstadt to Oestrich-Winkel | 154.80 mi (249.12 km) |
| Rudolstadt to Offenburg | 217.40 mi (349.87 km) |
| Rudolstadt to Oftersheim | 153.16 mi (246.49 km) |
| Rudolstadt to Ohrdruf | 27.10 mi (43.61 km) |
| Rudolstadt to Ohringen | 132.59 mi (213.39 km) |
| Rudolstadt to Olbernhau | 87.86 mi (141.40 km) |
| Rudolstadt to Olching | 173.90 mi (279.87 km) |
| Rudolstadt to Oldenburg | 213.77 mi (344.03 km) |
| Rudolstadt to Oldenburg in Holstein | 248.27 mi (399.55 km) |
| Rudolstadt to Olfen | 184.12 mi (296.31 km) |
| Rudolstadt to Olpe | 153.76 mi (247.45 km) |
| Rudolstadt to Olsberg | 131.08 mi (210.96 km) |
| Rudolstadt to Oranienburg | 162.75 mi (261.93 km) |
| Rudolstadt to Ortenberg | 102.85 mi (165.52 km) |
