| Simav to Oerlinghausen | 1,318.18 mi (2,121.40 km) |
| Simav to Oestrich-Winkel | 1,272.08 mi (2,047.21 km) |
| Simav to Offenburg | 1,228.00 mi (1,976.27 km) |
| Simav to Oftersheim | 1,228.58 mi (1,977.21 km) |
| Simav to Ohrdruf | 1,200.11 mi (1,931.39 km) |
| Simav to Ohringen | 1,186.66 mi (1,909.74 km) |
| Simav to Olbernhau | 1,103.59 mi (1,776.06 km) |
| Simav to Olching | 1,080.73 mi (1,739.26 km) |
| Simav to Oldenburg | 1,380.82 mi (2,222.21 km) |
| Simav to Oldenburg in Holstein | 1,348.69 mi (2,170.51 km) |
| Simav to Olfen | 1,354.69 mi (2,180.17 km) |
| Simav to Olpe | 1,313.06 mi (2,113.17 km) |
| Simav to Olsberg | 1,301.18 mi (2,094.05 km) |
| Simav to Oranienburg | 1,204.90 mi (1,939.10 km) |
| Simav to Ortenberg | 1,243.71 mi (2,001.56 km) |
