| Diepholz to Oestrich-Winkel | 180.85 mi (291.05 km) |
| Diepholz to Offenburg | 286.72 mi (461.44 km) |
| Diepholz to Oftersheim | 223.82 mi (360.20 km) |
| Diepholz to Ohrdruf | 159.14 mi (256.11 km) |
| Diepholz to Ohringen | 240.49 mi (387.03 km) |
| Diepholz to Olbernhau | 251.42 mi (404.63 km) |
| Diepholz to Olching | 330.92 mi (532.56 km) |
| Diepholz to Oldenburg | 37.66 mi (60.60 km) |
| Diepholz to Oldenburg in Holstein | 156.07 mi (251.17 km) |
| Diepholz to Olfen | 74.42 mi (119.77 km) |
| Diepholz to Olpe | 112.27 mi (180.68 km) |
| Diepholz to Olsberg | 87.00 mi (140.01 km) |
| Diepholz to Oranienburg | 204.03 mi (328.36 km) |
| Diepholz to Ortenberg | 158.32 mi (254.79 km) |
| Diepholz to Oschatz | 220.91 mi (355.52 km) |
