| Americus to Oberkirch | 4,695.35 mi (7,556.43 km) |
| Americus to Obernburg am Main | 4,702.07 mi (7,567.26 km) |
| Americus to Obernkirchen | 4,633.60 mi (7,457.06 km) |
| Americus to Oberschleissheim | 4,848.30 mi (7,802.58 km) |
| Americus to Oberstdorf | 4,820.17 mi (7,757.31 km) |
| Americus to Obertraubling | 4,850.85 mi (7,806.69 km) |
| Americus to Obertshausen | 4,683.18 mi (7,536.85 km) |
| Americus to Oberursel | 4,668.98 mi (7,514.00 km) |
| Americus to Ochsenfurt | 4,745.11 mi (7,636.51 km) |
| Americus to Ochsenhausen | 4,786.52 mi (7,703.17 km) |
| Americus to Ochtrup | 4,559.94 mi (7,338.52 km) |
| Americus to Odenthal | 4,587.62 mi (7,383.06 km) |
| Americus to Oelde | 4,607.47 mi (7,415.01 km) |
| Americus to Oelsnitz | 4,806.49 mi (7,735.30 km) |
| Americus to Oer-Erkenschwick | 4,576.99 mi (7,365.95 km) |
