| Issoire to Oestrich-Winkel | 378.59 mi (609.27 km) |
| Issoire to Offenburg | 299.04 mi (481.26 km) |
| Issoire to Oftersheim | 363.18 mi (584.49 km) |
| Issoire to Ohrdruf | 501.64 mi (807.31 km) |
| Issoire to Ohringen | 386.24 mi (621.60 km) |
| Issoire to Olbernhau | 583.74 mi (939.44 km) |
| Issoire to Olching | 422.67 mi (680.22 km) |
| Issoire to Oldenburg | 570.33 mi (917.86 km) |
| Issoire to Oldenburg in Holstein | 692.85 mi (1,115.04 km) |
| Issoire to Olfen | 466.21 mi (750.29 km) |
| Issoire to Olpe | 432.70 mi (696.36 km) |
| Issoire to Olsberg | 467.12 mi (751.76 km) |
| Issoire to Oranienburg | 671.04 mi (1,079.93 km) |
| Issoire to Ortenberg | 427.19 mi (687.50 km) |
| Issoire to Oschatz | 601.16 mi (967.47 km) |
