| Sremski Karlovci to Octeville | 1,049.96 mi (1,689.75 km) |
| Sremski Karlovci to Oignies | 863.32 mi (1,389.38 km) |
| Sremski Karlovci to Oissel | 925.67 mi (1,489.72 km) |
| Sremski Karlovci to Olivet | 874.53 mi (1,407.41 km) |
| Sremski Karlovci to Ollioules | 711.50 mi (1,145.05 km) |
| Sremski Karlovci to Olonne-sur-Mer | 1,045.04 mi (1,681.83 km) |
| Sremski Karlovci to Oloron-Sainte-Marie | 1,024.03 mi (1,648.02 km) |
| Sremski Karlovci to Onet Village | 850.67 mi (1,369.02 km) |
| Sremski Karlovci to Onnaing | 836.32 mi (1,345.92 km) |
| Sremski Karlovci to Orange | 745.64 mi (1,200.00 km) |
| Sremski Karlovci to Orchies | 853.00 mi (1,372.77 km) |
| Sremski Karlovci to Orleans | 874.40 mi (1,407.20 km) |
| Sremski Karlovci to Orly | 860.23 mi (1,384.41 km) |
| Sremski Karlovci to Ormesson-sur-Marne | 854.22 mi (1,374.73 km) |
| Sremski Karlovci to Orsay | 868.93 mi (1,398.40 km) |
