| Zionsville to Oberkirch | 4,403.20 mi (7,086.27 km) |
| Zionsville to Obernburg am Main | 4,396.56 mi (7,075.58 km) |
| Zionsville to Obernkirchen | 4,309.04 mi (6,934.72 km) |
| Zionsville to Oberschleissheim | 4,548.32 mi (7,319.81 km) |
| Zionsville to Oberstdorf | 4,530.56 mi (7,291.24 km) |
| Zionsville to Obertraubling | 4,543.64 mi (7,312.28 km) |
| Zionsville to Obertshausen | 4,376.70 mi (7,043.62 km) |
| Zionsville to Oberursel | 4,362.09 mi (7,020.11 km) |
| Zionsville to Ochsenfurt | 4,438.56 mi (7,143.17 km) |
| Zionsville to Ochsenhausen | 4,492.69 mi (7,230.29 km) |
| Zionsville to Ochtrup | 4,240.50 mi (6,824.42 km) |
| Zionsville to Odenthal | 4,277.83 mi (6,884.50 km) |
| Zionsville to Oelde | 4,288.69 mi (6,901.98 km) |
| Zionsville to Oelsnitz | 4,488.28 mi (7,223.18 km) |
| Zionsville to Oer-Erkenschwick | 4,261.94 mi (6,858.93 km) |
