| Altamont to Oerlinghausen | 5,286.28 mi (8,507.45 km) |
| Altamont to Oestrich-Winkel | 5,379.97 mi (8,658.22 km) |
| Altamont to Offenburg | 5,464.38 mi (8,794.07 km) |
| Altamont to Oftersheim | 5,430.56 mi (8,739.63 km) |
| Altamont to Ohrdruf | 5,401.66 mi (8,693.13 km) |
| Altamont to Ohringen | 5,463.82 mi (8,793.16 km) |
| Altamont to Olbernhau | 5,473.03 mi (8,808.00 km) |
| Altamont to Olching | 5,567.38 mi (8,959.83 km) |
| Altamont to Oldenburg | 5,209.13 mi (8,383.29 km) |
| Altamont to Oldenburg in Holstein | 5,206.60 mi (8,379.21 km) |
| Altamont to Olfen | 5,268.17 mi (8,478.30 km) |
| Altamont to Olpe | 5,318.69 mi (8,559.60 km) |
| Altamont to Olsberg | 5,316.41 mi (8,555.94 km) |
| Altamont to Oranienburg | 5,348.95 mi (8,608.30 km) |
| Altamont to Ortenberg | 5,386.91 mi (8,669.39 km) |
