| Warendorf to Oerlinghausen | 28.68 mi (46.16 km) |
| Warendorf to Oestrich-Winkel | 135.00 mi (217.26 km) |
| Warendorf to Offenburg | 240.96 mi (387.78 km) |
| Warendorf to Oftersheim | 180.36 mi (290.26 km) |
| Warendorf to Ohrdruf | 141.41 mi (227.58 km) |
| Warendorf to Ohringen | 201.42 mi (324.16 km) |
| Warendorf to Olbernhau | 247.12 mi (397.70 km) |
| Warendorf to Olching | 298.23 mi (479.96 km) |
| Warendorf to Oldenburg | 82.74 mi (133.16 km) |
| Warendorf to Oldenburg in Holstein | 201.54 mi (324.34 km) |
| Warendorf to Olfen | 30.77 mi (49.52 km) |
| Warendorf to Olpe | 65.12 mi (104.80 km) |
| Warendorf to Olsberg | 46.71 mi (75.18 km) |
| Warendorf to Oranienburg | 228.03 mi (366.98 km) |
| Warendorf to Ortenberg | 119.62 mi (192.51 km) |
