| Bad Gandersheim to Oestrich-Winkel | 156.52 mi (251.90 km) |
| Bad Gandersheim to Offenburg | 252.81 mi (406.86 km) |
| Bad Gandersheim to Oftersheim | 183.99 mi (296.10 km) |
| Bad Gandersheim to Ohrdruf | 78.31 mi (126.04 km) |
| Bad Gandersheim to Ohringen | 186.04 mi (299.41 km) |
| Bad Gandersheim to Olbernhau | 165.46 mi (266.28 km) |
| Bad Gandersheim to Olching | 260.08 mi (418.57 km) |
| Bad Gandersheim to Oldenburg | 116.30 mi (187.16 km) |
| Bad Gandersheim to Oldenburg in Holstein | 171.50 mi (276.00 km) |
| Bad Gandersheim to Olfen | 113.40 mi (182.50 km) |
| Bad Gandersheim to Olpe | 111.36 mi (179.21 km) |
| Bad Gandersheim to Olsberg | 75.35 mi (121.26 km) |
| Bad Gandersheim to Oranienburg | 148.71 mi (239.33 km) |
| Bad Gandersheim to Ortenberg | 112.88 mi (181.67 km) |
| Bad Gandersheim to Oschatz | 138.06 mi (222.19 km) |
