| Buckeye to Oerlinghausen | 5,555.18 mi (8,940.21 km) |
| Buckeye to Oestrich-Winkel | 5,627.82 mi (9,057.10 km) |
| Buckeye to Offenburg | 5,698.56 mi (9,170.95 km) |
| Buckeye to Oftersheim | 5,676.76 mi (9,135.86 km) |
| Buckeye to Ohrdruf | 5,673.84 mi (9,131.17 km) |
| Buckeye to Ohringen | 5,714.53 mi (9,196.65 km) |
| Buckeye to Olbernhau | 5,760.55 mi (9,270.70 km) |
| Buckeye to Olching | 5,821.92 mi (9,369.48 km) |
| Buckeye to Oldenburg | 5,485.44 mi (8,827.96 km) |
| Buckeye to Oldenburg in Holstein | 5,508.22 mi (8,864.62 km) |
| Buckeye to Olfen | 5,527.11 mi (8,895.02 km) |
| Buckeye to Olpe | 5,574.29 mi (8,970.96 km) |
| Buckeye to Olsberg | 5,578.91 mi (8,978.39 km) |
| Buckeye to Oranienburg | 5,652.17 mi (9,096.29 km) |
| Buckeye to Ortenberg | 5,644.52 mi (9,083.97 km) |
