| Butler to Oerlinghausen | 4,021.05 mi (6,471.25 km) |
| Butler to Oestrich-Winkel | 4,058.10 mi (6,530.87 km) |
| Butler to Offenburg | 4,105.56 mi (6,607.27 km) |
| Butler to Oftersheim | 4,101.67 mi (6,601.01 km) |
| Butler to Ohrdruf | 4,136.66 mi (6,657.31 km) |
| Butler to Ohringen | 4,143.50 mi (6,668.31 km) |
| Butler to Olbernhau | 4,240.82 mi (6,824.94 km) |
| Butler to Olching | 4,249.75 mi (6,839.31 km) |
| Butler to Oldenburg | 3,967.50 mi (6,385.07 km) |
| Butler to Oldenburg in Holstein | 4,028.99 mi (6,484.03 km) |
| Butler to Olfen | 3,979.97 mi (6,405.14 km) |
| Butler to Olpe | 4,019.14 mi (6,468.18 km) |
| Butler to Olsberg | 4,033.59 mi (6,491.44 km) |
| Butler to Oranienburg | 4,164.84 mi (6,702.67 km) |
| Butler to Ortenberg | 4,087.74 mi (6,578.58 km) |
