| Alcoa to Oerlinghausen | 4,424.50 mi (7,120.55 km) |
| Alcoa to Oestrich-Winkel | 4,457.80 mi (7,174.14 km) |
| Alcoa to Offenburg | 4,502.26 mi (7,245.69 km) |
| Alcoa to Oftersheim | 4,500.57 mi (7,242.97 km) |
| Alcoa to Ohrdruf | 4,539.37 mi (7,305.41 km) |
| Alcoa to Ohringen | 4,542.67 mi (7,310.72 km) |
| Alcoa to Olbernhau | 4,644.68 mi (7,474.89 km) |
| Alcoa to Olching | 4,648.30 mi (7,480.72 km) |
| Alcoa to Oldenburg | 4,372.56 mi (7,036.95 km) |
| Alcoa to Oldenburg in Holstein | 4,436.63 mi (7,140.07 km) |
| Alcoa to Olfen | 4,382.38 mi (7,052.76 km) |
| Alcoa to Olpe | 4,420.58 mi (7,114.24 km) |
| Alcoa to Olsberg | 4,435.95 mi (7,138.98 km) |
| Alcoa to Oranienburg | 4,571.50 mi (7,357.11 km) |
| Alcoa to Ortenberg | 4,488.71 mi (7,223.88 km) |
