| Birkerod to Oignies | 537.98 mi (865.79 km) |
| Birkerod to Oissel | 652.60 mi (1,050.26 km) |
| Birkerod to Olivet | 709.25 mi (1,141.42 km) |
| Birkerod to Ollioules | 924.53 mi (1,487.88 km) |
| Birkerod to Olonne-sur-Mer | 886.18 mi (1,426.16 km) |
| Birkerod to Oloron-Sainte-Marie | 1,047.30 mi (1,685.46 km) |
| Birkerod to Onet Village | 902.41 mi (1,452.29 km) |
| Birkerod to Onnaing | 524.43 mi (843.99 km) |
| Birkerod to Orange | 874.90 mi (1,408.01 km) |
| Birkerod to Orchies | 530.25 mi (853.36 km) |
| Birkerod to Orleans | 706.84 mi (1,137.56 km) |
| Birkerod to Orly | 646.78 mi (1,040.90 km) |
| Birkerod to Ormesson-sur-Marne | 640.49 mi (1,030.77 km) |
| Birkerod to Orsay | 654.96 mi (1,054.06 km) |
| Birkerod to Orthez | 1,033.65 mi (1,663.50 km) |
