| Catalina Foothills to Oberkirch | 5,704.69 mi (9,180.82 km) |
| Catalina Foothills to Obernburg am Main | 5,679.65 mi (9,140.52 km) |
| Catalina Foothills to Obernkirchen | 5,566.18 mi (8,957.90 km) |
| Catalina Foothills to Oberschleissheim | 5,834.92 mi (9,390.39 km) |
| Catalina Foothills to Oberstdorf | 5,832.01 mi (9,385.71 km) |
| Catalina Foothills to Obertraubling | 5,819.89 mi (9,366.21 km) |
| Catalina Foothills to Obertshausen | 5,658.98 mi (9,107.25 km) |
| Catalina Foothills to Oberursel | 5,644.23 mi (9,083.51 km) |
| Catalina Foothills to Ochsenfurt | 5,718.91 mi (9,203.69 km) |
| Catalina Foothills to Ochsenhausen | 5,789.44 mi (9,317.20 km) |
| Catalina Foothills to Ochtrup | 5,507.79 mi (8,863.93 km) |
| Catalina Foothills to Odenthal | 5,558.29 mi (8,945.20 km) |
| Catalina Foothills to Oelde | 5,555.45 mi (8,940.63 km) |
| Catalina Foothills to Oelsnitz | 5,749.57 mi (9,253.04 km) |
| Catalina Foothills to Oer-Erkenschwick | 5,535.16 mi (8,907.99 km) |
