| Alamo to Oerlinghausen | 5,470.28 mi (8,803.57 km) |
| Alamo to Oestrich-Winkel | 5,510.58 mi (8,868.42 km) |
| Alamo to Offenburg | 5,559.17 mi (8,946.63 km) |
| Alamo to Oftersheim | 5,554.56 mi (8,939.19 km) |
| Alamo to Ohrdruf | 5,586.67 mi (8,990.88 km) |
| Alamo to Ohringen | 5,596.23 mi (9,006.27 km) |
| Alamo to Olbernhau | 5,689.33 mi (9,156.09 km) |
| Alamo to Olching | 5,702.74 mi (9,177.67 km) |
| Alamo to Oldenburg | 5,414.52 mi (8,713.82 km) |
| Alamo to Oldenburg in Holstein | 5,470.51 mi (8,803.93 km) |
| Alamo to Olfen | 5,430.40 mi (8,739.39 km) |
| Alamo to Olpe | 5,470.43 mi (8,803.81 km) |
| Alamo to Olsberg | 5,484.04 mi (8,825.71 km) |
| Alamo to Oranienburg | 5,608.54 mi (9,026.07 km) |
| Alamo to Ortenberg | 5,539.37 mi (8,914.75 km) |
