| Gura Humorului to Octeville | 1,259.22 mi (2,026.52 km) |
| Gura Humorului to Oignies | 1,052.54 mi (1,693.90 km) |
| Gura Humorului to Oissel | 1,137.98 mi (1,831.39 km) |
| Gura Humorului to Olivet | 1,111.01 mi (1,787.99 km) |
| Gura Humorului to Ollioules | 1,016.58 mi (1,636.03 km) |
| Gura Humorului to Olonne-sur-Mer | 1,297.37 mi (2,087.91 km) |
| Gura Humorului to Oloron-Sainte-Marie | 1,313.88 mi (2,114.49 km) |
| Gura Humorului to Onet Village | 1,135.86 mi (1,827.99 km) |
| Gura Humorului to Onnaing | 1,025.73 mi (1,650.76 km) |
| Gura Humorului to Orange | 1,038.14 mi (1,670.72 km) |
| Gura Humorului to Orchies | 1,041.54 mi (1,676.20 km) |
| Gura Humorului to Orleans | 1,110.26 mi (1,786.79 km) |
| Gura Humorului to Orly | 1,081.96 mi (1,741.24 km) |
| Gura Humorului to Ormesson-sur-Marne | 1,075.13 mi (1,730.25 km) |
| Gura Humorului to Orsay | 1,091.54 mi (1,756.66 km) |
