| Grossostheim to Oestrich-Winkel | 48.50 mi (78.05 km) |
| Grossostheim to Offenburg | 112.84 mi (181.60 km) |
| Grossostheim to Oftersheim | 43.83 mi (70.54 km) |
| Grossostheim to Ohrdruf | 96.17 mi (154.77 km) |
| Grossostheim to Ohringen | 52.92 mi (85.17 km) |
| Grossostheim to Olbernhau | 194.60 mi (313.18 km) |
| Grossostheim to Olching | 155.85 mi (250.82 km) |
| Grossostheim to Oldenburg | 226.08 mi (363.85 km) |
| Grossostheim to Oldenburg in Holstein | 312.31 mi (502.62 km) |
| Grossostheim to Olfen | 144.82 mi (233.06 km) |
| Grossostheim to Olpe | 93.80 mi (150.95 km) |
| Grossostheim to Olsberg | 102.46 mi (164.90 km) |
| Grossostheim to Oranienburg | 265.60 mi (427.44 km) |
| Grossostheim to Ortenberg | 30.36 mi (48.87 km) |
| Grossostheim to Oschatz | 200.63 mi (322.89 km) |
