| Eiras to Oerlinghausen | 1,146.32 mi (1,844.83 km) |
| Eiras to Oestrich-Winkel | 1,042.71 mi (1,678.08 km) |
| Eiras to Offenburg | 984.61 mi (1,584.58 km) |
| Eiras to Oftersheim | 1,041.46 mi (1,676.06 km) |
| Eiras to Ohrdruf | 1,174.91 mi (1,890.84 km) |
| Eiras to Ohringen | 1,071.46 mi (1,724.35 km) |
| Eiras to Olbernhau | 1,269.41 mi (2,042.92 km) |
| Eiras to Olching | 1,116.81 mi (1,797.34 km) |
| Eiras to Oldenburg | 1,184.28 mi (1,905.92 km) |
| Eiras to Oldenburg in Holstein | 1,319.07 mi (2,122.84 km) |
| Eiras to Olfen | 1,092.97 mi (1,758.96 km) |
| Eiras to Olpe | 1,077.76 mi (1,734.49 km) |
| Eiras to Olsberg | 1,114.11 mi (1,792.98 km) |
| Eiras to Oranienburg | 1,335.59 mi (2,149.43 km) |
| Eiras to Ortenberg | 1,095.22 mi (1,762.59 km) |
