| Douglasville to Orbetello | 4,964.31 mi (7,989.29 km) |
| Douglasville to Oria | 5,317.63 mi (8,557.90 km) |
| Douglasville to Oristano | 4,930.51 mi (7,934.89 km) |
| Douglasville to Orta Nova | 5,202.20 mi (8,372.13 km) |
| Douglasville to Orte | 5,015.51 mi (8,071.68 km) |
| Douglasville to Ortona | 5,107.73 mi (8,220.10 km) |
| Douglasville to Orvieto | 4,994.44 mi (8,037.78 km) |
| Douglasville to Orzinuovi | 4,810.30 mi (7,741.43 km) |
| Douglasville to Osimo | 5,027.73 mi (8,091.34 km) |
| Douglasville to Ospitaletto | 4,811.28 mi (7,743.01 km) |
| Douglasville to Ostuni | 5,306.55 mi (8,540.07 km) |
| Douglasville to Ottaviano | 5,165.29 mi (8,312.73 km) |
| Douglasville to Ovada | 4,778.95 mi (7,690.97 km) |
| Douglasville to Ozieri | 4,926.91 mi (7,929.09 km) |
| Douglasville to Paceco | 5,181.12 mi (8,338.20 km) |
