| Petersburg to Octeville | 3,731.61 mi (6,005.44 km) |
| Petersburg to Oignies | 3,908.03 mi (6,289.37 km) |
| Petersburg to Oissel | 3,854.30 mi (6,202.89 km) |
| Petersburg to Olivet | 3,923.98 mi (6,315.03 km) |
| Petersburg to Ollioules | 4,227.93 mi (6,804.20 km) |
| Petersburg to Olonne-sur-Mer | 3,793.48 mi (6,105.02 km) |
| Petersburg to Oloron-Sainte-Marie | 3,928.96 mi (6,323.05 km) |
| Petersburg to Onet Village | 4,045.10 mi (6,509.96 km) |
| Petersburg to Onnaing | 3,934.96 mi (6,332.71 km) |
| Petersburg to Orange | 4,151.78 mi (6,681.65 km) |
| Petersburg to Orchies | 3,918.27 mi (6,305.84 km) |
| Petersburg to Orleans | 3,923.40 mi (6,314.10 km) |
| Petersburg to Orly | 3,923.77 mi (6,314.70 km) |
| Petersburg to Ormesson-sur-Marne | 3,928.97 mi (6,323.06 km) |
| Petersburg to Orsay | 3,916.11 mi (6,302.37 km) |
