| Roetgen to Oerlinghausen | 140.09 mi (225.45 km) |
| Roetgen to Oestrich-Winkel | 91.22 mi (146.80 km) |
| Roetgen to Offenburg | 169.67 mi (273.05 km) |
| Roetgen to Oftersheim | 137.92 mi (221.97 km) |
| Roetgen to Ohrdruf | 198.55 mi (319.54 km) |
| Roetgen to Ohringen | 177.69 mi (285.97 km) |
| Roetgen to Olbernhau | 312.33 mi (502.64 km) |
| Roetgen to Olching | 285.43 mi (459.36 km) |
| Roetgen to Oldenburg | 192.50 mi (309.80 km) |
| Roetgen to Oldenburg in Holstein | 319.93 mi (514.87 km) |
| Roetgen to Olfen | 89.77 mi (144.46 km) |
| Roetgen to Olpe | 75.64 mi (121.73 km) |
| Roetgen to Olsberg | 110.43 mi (177.72 km) |
| Roetgen to Oranienburg | 334.38 mi (538.13 km) |
| Roetgen to Ortenberg | 127.11 mi (204.56 km) |
