| Forest to Oestrich-Winkel | 171.30 mi (275.67 km) |
| Forest to Offenburg | 228.76 mi (368.15 km) |
| Forest to Oftersheim | 213.48 mi (343.56 km) |
| Forest to Ohrdruf | 279.63 mi (450.01 km) |
| Forest to Ohringen | 255.34 mi (410.93 km) |
| Forest to Olbernhau | 393.79 mi (633.74 km) |
| Forest to Olching | 361.73 mi (582.15 km) |
| Forest to Oldenburg | 230.87 mi (371.55 km) |
| Forest to Oldenburg in Holstein | 365.72 mi (588.57 km) |
| Forest to Olfen | 146.21 mi (235.31 km) |
| Forest to Olpe | 153.47 mi (246.99 km) |
| Forest to Olsberg | 184.25 mi (296.52 km) |
| Forest to Oranienburg | 403.54 mi (649.43 km) |
| Forest to Ortenberg | 209.89 mi (337.78 km) |
| Forest to Oschatz | 382.66 mi (615.84 km) |
