| Seesen to Oerlinghausen | 64.60 mi (103.96 km) |
| Seesen to Oestrich-Winkel | 161.54 mi (259.97 km) |
| Seesen to Offenburg | 256.70 mi (413.13 km) |
| Seesen to Oftersheim | 187.75 mi (302.15 km) |
| Seesen to Ohrdruf | 77.37 mi (124.52 km) |
| Seesen to Ohringen | 188.44 mi (303.27 km) |
| Seesen to Olbernhau | 160.52 mi (258.33 km) |
| Seesen to Olching | 260.11 mi (418.61 km) |
| Seesen to Oldenburg | 119.53 mi (192.37 km) |
| Seesen to Oldenburg in Holstein | 168.85 mi (271.74 km) |
| Seesen to Olfen | 120.02 mi (193.16 km) |
| Seesen to Olpe | 117.72 mi (189.45 km) |
| Seesen to Olsberg | 81.82 mi (131.68 km) |
| Seesen to Oranienburg | 142.20 mi (228.85 km) |
| Seesen to Ortenberg | 116.85 mi (188.04 km) |
