| Grunberg to Oestrich-Winkel | 58.96 mi (94.89 km) |
| Grunberg to Offenburg | 154.28 mi (248.29 km) |
| Grunberg to Oftersheim | 86.48 mi (139.18 km) |
| Grunberg to Ohrdruf | 79.57 mi (128.06 km) |
| Grunberg to Ohringen | 99.78 mi (160.58 km) |
| Grunberg to Olbernhau | 192.12 mi (309.19 km) |
| Grunberg to Olching | 197.01 mi (317.06 km) |
| Grunberg to Oldenburg | 178.55 mi (287.34 km) |
| Grunberg to Oldenburg in Holstein | 268.27 mi (431.74 km) |
| Grunberg to Olfen | 102.77 mi (165.39 km) |
| Grunberg to Olpe | 56.62 mi (91.12 km) |
| Grunberg to Olsberg | 55.66 mi (89.57 km) |
| Grunberg to Oranienburg | 236.35 mi (380.36 km) |
| Grunberg to Ortenberg | 17.50 mi (28.16 km) |
| Grunberg to Oschatz | 187.28 mi (301.41 km) |
