| Central Falls to Oberkirch | 3,718.39 mi (5,984.17 km) |
| Central Falls to Obernburg am Main | 3,723.91 mi (5,993.05 km) |
| Central Falls to Obernkirchen | 3,655.23 mi (5,882.53 km) |
| Central Falls to Oberschleissheim | 3,870.63 mi (6,229.18 km) |
| Central Falls to Oberstdorf | 3,843.66 mi (6,185.77 km) |
| Central Falls to Obertraubling | 3,872.65 mi (6,232.43 km) |
| Central Falls to Obertshausen | 3,704.95 mi (5,962.54 km) |
| Central Falls to Oberursel | 3,690.72 mi (5,939.64 km) |
| Central Falls to Ochsenfurt | 3,766.90 mi (6,062.23 km) |
| Central Falls to Ochsenhausen | 3,809.45 mi (6,130.71 km) |
| Central Falls to Ochtrup | 3,581.44 mi (5,763.78 km) |
| Central Falls to Odenthal | 3,609.21 mi (5,808.46 km) |
| Central Falls to Oelde | 3,628.96 mi (5,840.24 km) |
| Central Falls to Oelsnitz | 3,827.97 mi (6,160.52 km) |
| Central Falls to Oer-Erkenschwick | 3,598.47 mi (5,791.18 km) |
