| North Druid Hills to Oerlinghausen | 4,538.80 mi (7,304.49 km) |
| North Druid Hills to Oestrich-Winkel | 4,569.05 mi (7,353.17 km) |
| North Druid Hills to Offenburg | 4,611.23 mi (7,421.06 km) |
| North Druid Hills to Oftersheim | 4,611.17 mi (7,420.96 km) |
| North Druid Hills to Ohrdruf | 4,652.96 mi (7,488.22 km) |
| North Druid Hills to Ohringen | 4,653.45 mi (7,489.00 km) |
| North Druid Hills to Olbernhau | 4,759.21 mi (7,659.21 km) |
| North Druid Hills to Olching | 4,758.55 mi (7,658.15 km) |
| North Druid Hills to Oldenburg | 4,488.29 mi (7,223.20 km) |
| North Druid Hills to Oldenburg in Holstein | 4,554.84 mi (7,330.31 km) |
| North Druid Hills to Olfen | 4,495.81 mi (7,235.31 km) |
| North Druid Hills to Olpe | 4,533.21 mi (7,295.49 km) |
| North Druid Hills to Olsberg | 4,549.32 mi (7,321.42 km) |
| North Druid Hills to Oranienburg | 4,688.64 mi (7,545.64 km) |
| North Druid Hills to Ortenberg | 4,600.92 mi (7,404.47 km) |
