| Balchik to Oignies | 1,275.13 mi (2,052.13 km) |
| Balchik to Oissel | 1,344.99 mi (2,164.55 km) |
| Balchik to Olivet | 1,298.16 mi (2,089.19 km) |
| Balchik to Ollioules | 1,119.21 mi (1,801.19 km) |
| Balchik to Olonne-sur-Mer | 1,469.61 mi (2,365.12 km) |
| Balchik to Oloron-Sainte-Marie | 1,439.20 mi (2,316.16 km) |
| Balchik to Onet Village | 1,269.47 mi (2,043.02 km) |
| Balchik to Onnaing | 1,247.94 mi (2,008.37 km) |
| Balchik to Orange | 1,162.00 mi (1,870.05 km) |
| Balchik to Orchies | 1,264.47 mi (2,034.97 km) |
| Balchik to Orleans | 1,297.96 mi (2,088.86 km) |
| Balchik to Orly | 1,281.36 mi (2,062.15 km) |
| Balchik to Ormesson-sur-Marne | 1,275.14 mi (2,052.14 km) |
| Balchik to Orsay | 1,290.28 mi (2,076.51 km) |
| Balchik to Orthez | 1,443.70 mi (2,323.41 km) |
