| Opoczno to Octeville | 967.62 mi (1,557.23 km) |
| Opoczno to Oignies | 754.03 mi (1,213.50 km) |
| Opoczno to Oissel | 855.17 mi (1,376.27 km) |
| Opoczno to Olivet | 855.45 mi (1,376.71 km) |
| Opoczno to Ollioules | 881.82 mi (1,419.15 km) |
| Opoczno to Olonne-sur-Mer | 1,050.48 mi (1,690.59 km) |
| Opoczno to Oloron-Sainte-Marie | 1,124.94 mi (1,810.42 km) |
| Opoczno to Onet Village | 948.84 mi (1,527.01 km) |
| Opoczno to Onnaing | 729.11 mi (1,173.38 km) |
| Opoczno to Orange | 872.96 mi (1,404.90 km) |
| Opoczno to Orchies | 743.15 mi (1,195.99 km) |
| Opoczno to Orleans | 854.04 mi (1,374.44 km) |
| Opoczno to Orly | 812.09 mi (1,306.93 km) |
| Opoczno to Ormesson-sur-Marne | 804.88 mi (1,295.32 km) |
| Opoczno to Orsay | 821.97 mi (1,322.83 km) |
