| Butler to Nasaud | 4,786.24 mi (7,702.71 km) |
| Butler to Navodari | 5,072.94 mi (8,164.10 km) |
| Butler to Negresti-Oas | 4,725.22 mi (7,604.51 km) |
| Butler to Nehoiu | 4,940.74 mi (7,951.35 km) |
| Butler to Ocna Mures | 4,804.32 mi (7,731.80 km) |
| Butler to Odobesti | 4,950.45 mi (7,966.98 km) |
| Butler to Odorheiu Secuiesc | 4,861.21 mi (7,823.36 km) |
| Butler to Oltenita | 5,009.73 mi (8,062.38 km) |
| Butler to Onesti | 4,917.61 mi (7,914.13 km) |
| Butler to Oradea | 4,702.85 mi (7,568.50 km) |
| Butler to Orastie | 4,802.60 mi (7,729.03 km) |
| Butler to Oravita | 4,778.95 mi (7,690.98 km) |
| Butler to Orsova | 4,819.79 mi (7,756.70 km) |
| Butler to Otelu Rosu | 4,784.44 mi (7,699.82 km) |
| Butler to Otopeni | 4,967.66 mi (7,994.67 km) |
