| Allendale to Oerlinghausen | 4,142.19 mi (6,666.21 km) |
| Allendale to Oestrich-Winkel | 4,191.62 mi (6,745.76 km) |
| Allendale to Offenburg | 4,247.58 mi (6,835.82 km) |
| Allendale to Oftersheim | 4,237.41 mi (6,819.45 km) |
| Allendale to Ohrdruf | 4,259.87 mi (6,855.60 km) |
| Allendale to Ohringen | 4,278.18 mi (6,885.07 km) |
| Allendale to Olbernhau | 4,359.25 mi (7,015.53 km) |
| Allendale to Olching | 4,385.68 mi (7,058.07 km) |
| Allendale to Oldenburg | 4,082.78 mi (6,570.59 km) |
| Allendale to Oldenburg in Holstein | 4,132.38 mi (6,650.42 km) |
| Allendale to Olfen | 4,105.10 mi (6,606.53 km) |
| Allendale to Olpe | 4,147.34 mi (6,674.50 km) |
| Allendale to Olsberg | 4,158.60 mi (6,692.62 km) |
| Allendale to Oranienburg | 4,272.17 mi (6,875.40 km) |
| Allendale to Ortenberg | 4,217.09 mi (6,786.75 km) |
