| Arganil to Oerlinghausen | 1,135.31 mi (1,827.11 km) |
| Arganil to Oestrich-Winkel | 1,030.36 mi (1,658.20 km) |
| Arganil to Offenburg | 970.96 mi (1,562.60 km) |
| Arganil to Oftersheim | 1,028.37 mi (1,654.99 km) |
| Arganil to Ohrdruf | 1,162.32 mi (1,870.57 km) |
| Arganil to Ohringen | 1,057.94 mi (1,702.60 km) |
| Arganil to Olbernhau | 1,256.02 mi (2,021.37 km) |
| Arganil to Olching | 1,102.05 mi (1,773.58 km) |
| Arganil to Oldenburg | 1,174.34 mi (1,889.92 km) |
| Arganil to Oldenburg in Holstein | 1,308.97 mi (2,106.59 km) |
| Arganil to Olfen | 1,082.28 mi (1,741.76 km) |
| Arganil to Olpe | 1,066.32 mi (1,716.07 km) |
| Arganil to Olsberg | 1,102.68 mi (1,774.59 km) |
| Arganil to Oranienburg | 1,323.70 mi (2,130.30 km) |
| Arganil to Ortenberg | 1,082.78 mi (1,742.57 km) |
