| Casas Adobes to Oerlinghausen | 5,567.65 mi (8,960.26 km) |
| Casas Adobes to Oestrich-Winkel | 5,636.60 mi (9,071.23 km) |
| Casas Adobes to Offenburg | 5,704.88 mi (9,181.11 km) |
| Casas Adobes to Oftersheim | 5,685.10 mi (9,149.28 km) |
| Casas Adobes to Ohrdruf | 5,686.44 mi (9,151.44 km) |
| Casas Adobes to Ohringen | 5,723.48 mi (9,211.06 km) |
| Casas Adobes to Olbernhau | 5,775.38 mi (9,294.57 km) |
| Casas Adobes to Olching | 5,831.13 mi (9,384.30 km) |
| Casas Adobes to Oldenburg | 5,499.35 mi (8,850.35 km) |
| Casas Adobes to Oldenburg in Holstein | 5,526.22 mi (8,893.60 km) |
| Casas Adobes to Olfen | 5,538.04 mi (8,912.61 km) |
| Casas Adobes to Olpe | 5,584.52 mi (8,987.41 km) |
| Casas Adobes to Olsberg | 5,590.25 mi (8,996.63 km) |
| Casas Adobes to Oranienburg | 5,669.96 mi (9,124.92 km) |
| Casas Adobes to Ortenberg | 5,654.83 mi (9,100.56 km) |
