| Providence to Oberkirch | 3,722.18 mi (5,990.27 km) |
| Providence to Obernburg am Main | 3,727.79 mi (5,999.30 km) |
| Providence to Obernkirchen | 3,659.25 mi (5,888.99 km) |
| Providence to Oberschleissheim | 3,874.47 mi (6,235.35 km) |
| Providence to Oberstdorf | 3,847.43 mi (6,191.83 km) |
| Providence to Obertraubling | 3,876.54 mi (6,238.69 km) |
| Providence to Obertshausen | 3,708.84 mi (5,968.80 km) |
| Providence to Oberursel | 3,694.62 mi (5,945.91 km) |
| Providence to Ochsenfurt | 3,770.79 mi (6,068.49 km) |
| Providence to Ochsenhausen | 3,813.25 mi (6,136.83 km) |
| Providence to Ochtrup | 3,585.43 mi (5,770.20 km) |
| Providence to Odenthal | 3,613.13 mi (5,814.77 km) |
| Providence to Oelde | 3,632.94 mi (5,846.65 km) |
| Providence to Oelsnitz | 3,831.93 mi (6,166.90 km) |
| Providence to Oer-Erkenschwick | 3,602.43 mi (5,797.54 km) |
