| North Druid Hills to Orbetello | 4,943.92 mi (7,956.48 km) |
| North Druid Hills to Oria | 5,297.39 mi (8,525.33 km) |
| North Druid Hills to Oristano | 4,909.60 mi (7,901.24 km) |
| North Druid Hills to Orta Nova | 5,181.95 mi (8,339.54 km) |
| North Druid Hills to Orte | 4,995.20 mi (8,039.00 km) |
| North Druid Hills to Ortona | 5,087.54 mi (8,187.61 km) |
| North Druid Hills to Orvieto | 4,974.15 mi (8,005.13 km) |
| North Druid Hills to Orzinuovi | 4,790.31 mi (7,709.26 km) |
| North Druid Hills to Osimo | 5,007.65 mi (8,059.04 km) |
| North Druid Hills to Ospitaletto | 4,791.33 mi (7,710.89 km) |
| North Druid Hills to Ostuni | 5,286.35 mi (8,507.55 km) |
| North Druid Hills to Ottaviano | 5,144.88 mi (8,279.89 km) |
| North Druid Hills to Ovada | 4,758.75 mi (7,658.47 km) |
| North Druid Hills to Ozieri | 4,906.12 mi (7,895.63 km) |
| North Druid Hills to Paceco | 5,160.19 mi (8,304.52 km) |
