| Dornbirn to Oestrich-Winkel | 195.50 mi (314.62 km) |
| Dornbirn to Offenburg | 111.05 mi (178.72 km) |
| Dornbirn to Oftersheim | 145.20 mi (233.67 km) |
| Dornbirn to Ohrdruf | 239.85 mi (386.00 km) |
| Dornbirn to Ohringen | 123.75 mi (199.15 km) |
| Dornbirn to Olbernhau | 276.99 mi (445.77 km) |
| Dornbirn to Olching | 90.63 mi (145.86 km) |
| Dornbirn to Oldenburg | 401.46 mi (646.08 km) |
| Dornbirn to Oldenburg in Holstein | 478.13 mi (769.48 km) |
| Dornbirn to Olfen | 315.42 mi (507.62 km) |
| Dornbirn to Olpe | 263.32 mi (423.78 km) |
| Dornbirn to Olsberg | 277.66 mi (446.85 km) |
| Dornbirn to Oranienburg | 399.77 mi (643.36 km) |
| Dornbirn to Ortenberg | 205.51 mi (330.73 km) |
| Dornbirn to Oschatz | 307.86 mi (495.46 km) |
