| Waltrop to Oerlinghausen | 59.94 mi (96.46 km) |
| Waltrop to Oestrich-Winkel | 114.90 mi (184.92 km) |
| Waltrop to Offenburg | 219.01 mi (352.46 km) |
| Waltrop to Oftersheim | 163.92 mi (263.81 km) |
| Waltrop to Ohrdruf | 154.83 mi (249.17 km) |
| Waltrop to Ohringen | 191.21 mi (307.72 km) |
| Waltrop to Olbernhau | 266.06 mi (428.19 km) |
| Waltrop to Olching | 293.78 mi (472.80 km) |
| Waltrop to Oldenburg | 111.18 mi (178.93 km) |
| Waltrop to Oldenburg in Holstein | 235.72 mi (379.36 km) |
| Waltrop to Olfen | 6.91 mi (11.12 km) |
| Waltrop to Olpe | 45.78 mi (73.68 km) |
| Waltrop to Olsberg | 50.79 mi (81.74 km) |
| Waltrop to Oranienburg | 260.04 mi (418.50 km) |
| Waltrop to Ortenberg | 113.48 mi (182.62 km) |
