| Hassa to Oerlinghausen | 1,711.24 mi (2,753.97 km) |
| Hassa to Oestrich-Winkel | 1,681.62 mi (2,706.31 km) |
| Hassa to Offenburg | 1,647.71 mi (2,651.73 km) |
| Hassa to Oftersheim | 1,641.28 mi (2,641.39 km) |
| Hassa to Ohrdruf | 1,596.12 mi (2,568.71 km) |
| Hassa to Ohringen | 1,598.60 mi (2,572.70 km) |
| Hassa to Olbernhau | 1,491.45 mi (2,400.26 km) |
| Hassa to Olching | 1,495.72 mi (2,407.12 km) |
| Hassa to Oldenburg | 1,765.73 mi (2,841.67 km) |
| Hassa to Oldenburg in Holstein | 1,714.04 mi (2,758.48 km) |
| Hassa to Olfen | 1,753.16 mi (2,821.43 km) |
| Hassa to Olpe | 1,715.66 mi (2,761.08 km) |
| Hassa to Olsberg | 1,699.60 mi (2,735.25 km) |
| Hassa to Oranienburg | 1,573.74 mi (2,532.69 km) |
| Hassa to Ortenberg | 1,648.24 mi (2,652.59 km) |
