| McAllen to Oerlinghausen | 5,472.64 mi (8,807.36 km) |
| McAllen to Oestrich-Winkel | 5,513.21 mi (8,872.66 km) |
| McAllen to Offenburg | 5,562.01 mi (8,951.19 km) |
| McAllen to Oftersheim | 5,557.25 mi (8,943.52 km) |
| McAllen to Ohrdruf | 5,589.08 mi (8,994.75 km) |
| McAllen to Ohringen | 5,598.90 mi (9,010.56 km) |
| McAllen to Olbernhau | 5,691.63 mi (9,159.79 km) |
| McAllen to Olching | 5,705.44 mi (9,182.03 km) |
| McAllen to Oldenburg | 5,416.74 mi (8,717.41 km) |
| McAllen to Oldenburg in Holstein | 5,472.47 mi (8,807.09 km) |
| McAllen to Olfen | 5,432.85 mi (8,743.33 km) |
| McAllen to Olpe | 5,472.95 mi (8,807.86 km) |
| McAllen to Olsberg | 5,486.49 mi (8,829.65 km) |
| McAllen to Oranienburg | 5,610.59 mi (9,029.37 km) |
| McAllen to Ortenberg | 5,541.91 mi (8,918.84 km) |
