| Hennebont to Oestrich-Winkel | 533.66 mi (858.85 km) |
| Hennebont to Offenburg | 518.56 mi (834.54 km) |
| Hennebont to Oftersheim | 552.29 mi (888.82 km) |
| Hennebont to Ohrdruf | 663.57 mi (1,067.92 km) |
| Hennebont to Ohringen | 592.18 mi (953.02 km) |
| Hennebont to Olbernhau | 773.27 mi (1,244.46 km) |
| Hennebont to Olching | 674.30 mi (1,085.18 km) |
| Hennebont to Oldenburg | 624.50 mi (1,005.04 km) |
| Hennebont to Oldenburg in Holstein | 759.18 mi (1,221.79 km) |
| Hennebont to Olfen | 546.54 mi (879.58 km) |
| Hennebont to Olpe | 545.92 mi (878.57 km) |
| Hennebont to Olsberg | 580.25 mi (933.83 km) |
| Hennebont to Oranienburg | 803.00 mi (1,292.31 km) |
| Hennebont to Ortenberg | 584.57 mi (940.78 km) |
| Hennebont to Oschatz | 771.26 mi (1,241.23 km) |
