| Vulcan to Oerlinghausen | 805.31 mi (1,296.02 km) |
| Vulcan to Oestrich-Winkel | 777.64 mi (1,251.49 km) |
| Vulcan to Offenburg | 753.95 mi (1,213.36 km) |
| Vulcan to Oftersheim | 739.73 mi (1,190.48 km) |
| Vulcan to Ohrdruf | 689.53 mi (1,109.68 km) |
| Vulcan to Ohringen | 696.83 mi (1,121.44 km) |
| Vulcan to Olbernhau | 586.63 mi (944.08 km) |
| Vulcan to Olching | 598.27 mi (962.81 km) |
| Vulcan to Oldenburg | 863.00 mi (1,388.86 km) |
| Vulcan to Oldenburg in Holstein | 825.54 mi (1,328.59 km) |
| Vulcan to Olfen | 846.47 mi (1,362.26 km) |
| Vulcan to Olpe | 809.18 mi (1,302.25 km) |
| Vulcan to Olsberg | 792.91 mi (1,276.06 km) |
| Vulcan to Oranienburg | 681.88 mi (1,097.38 km) |
| Vulcan to Ortenberg | 742.31 mi (1,194.64 km) |
