| Alpu to Oerlinghausen | 1,354.33 mi (2,179.58 km) |
| Alpu to Oestrich-Winkel | 1,319.26 mi (2,123.15 km) |
| Alpu to Offenburg | 1,283.25 mi (2,065.19 km) |
| Alpu to Oftersheim | 1,278.10 mi (2,056.90 km) |
| Alpu to Ohrdruf | 1,237.87 mi (1,992.16 km) |
| Alpu to Ohringen | 1,235.55 mi (1,988.42 km) |
| Alpu to Olbernhau | 1,135.98 mi (1,828.19 km) |
| Alpu to Olching | 1,131.90 mi (1,821.62 km) |
| Alpu to Oldenburg | 1,412.22 mi (2,272.75 km) |
| Alpu to Oldenburg in Holstein | 1,369.31 mi (2,203.69 km) |
| Alpu to Olfen | 1,394.35 mi (2,243.99 km) |
| Alpu to Olpe | 1,355.39 mi (2,181.29 km) |
| Alpu to Olsberg | 1,340.71 mi (2,157.67 km) |
| Alpu to Oranienburg | 1,226.83 mi (1,974.39 km) |
| Alpu to Ortenberg | 1,287.26 mi (2,071.65 km) |
