| Nenagh to Oerlinghausen | 711.83 mi (1,145.57 km) |
| Nenagh to Oestrich-Winkel | 723.54 mi (1,164.43 km) |
| Nenagh to Offenburg | 766.91 mi (1,234.23 km) |
| Nenagh to Oftersheim | 764.82 mi (1,230.86 km) |
| Nenagh to Ohrdruf | 817.77 mi (1,316.07 km) |
| Nenagh to Ohringen | 807.20 mi (1,299.07 km) |
| Nenagh to Olbernhau | 929.55 mi (1,495.97 km) |
| Nenagh to Olching | 912.17 mi (1,468.00 km) |
| Nenagh to Oldenburg | 681.22 mi (1,096.31 km) |
| Nenagh to Oldenburg in Holstein | 786.57 mi (1,265.86 km) |
| Nenagh to Olfen | 661.98 mi (1,065.35 km) |
| Nenagh to Olpe | 693.20 mi (1,115.60 km) |
| Nenagh to Olsberg | 713.98 mi (1,149.03 km) |
| Nenagh to Oranienburg | 892.00 mi (1,435.54 km) |
| Nenagh to Ortenberg | 758.36 mi (1,220.46 km) |
