| Diemen to Oerlinghausen | 158.88 mi (255.69 km) |
| Diemen to Oestrich-Winkel | 207.96 mi (334.67 km) |
| Diemen to Offenburg | 297.33 mi (478.51 km) |
| Diemen to Oftersheim | 258.41 mi (415.87 km) |
| Diemen to Ohrdruf | 268.43 mi (432.00 km) |
| Diemen to Ohringen | 293.34 mi (472.08 km) |
| Diemen to Olbernhau | 377.58 mi (607.66 km) |
| Diemen to Olching | 399.98 mi (643.70 km) |
| Diemen to Oldenburg | 146.92 mi (236.44 km) |
| Diemen to Oldenburg in Holstein | 279.34 mi (449.56 km) |
| Diemen to Olfen | 111.22 mi (178.98 km) |
| Diemen to Olpe | 152.82 mi (245.95 km) |
| Diemen to Olsberg | 164.75 mi (265.14 km) |
| Diemen to Oranienburg | 348.53 mi (560.91 km) |
| Diemen to Ortenberg | 223.11 mi (359.07 km) |
