| Gardner to Oberkirch | 4,788.06 mi (7,705.64 km) |
| Gardner to Obernburg am Main | 4,773.88 mi (7,682.82 km) |
| Gardner to Obernkirchen | 4,675.46 mi (7,524.43 km) |
| Gardner to Oberschleissheim | 4,927.69 mi (7,930.35 km) |
| Gardner to Oberstdorf | 4,915.89 mi (7,911.35 km) |
| Gardner to Obertraubling | 4,918.82 mi (7,916.08 km) |
| Gardner to Obertshausen | 4,753.61 mi (7,650.19 km) |
| Gardner to Oberursel | 4,738.88 mi (7,626.49 km) |
| Gardner to Ochsenfurt | 4,814.95 mi (7,748.91 km) |
| Gardner to Ochsenhausen | 4,875.96 mi (7,847.10 km) |
| Gardner to Ochtrup | 4,610.70 mi (7,420.20 km) |
| Gardner to Odenthal | 4,653.56 mi (7,489.19 km) |
| Gardner to Oelde | 4,658.90 mi (7,497.78 km) |
| Gardner to Oelsnitz | 4,857.22 mi (7,816.94 km) |
| Gardner to Oer-Erkenschwick | 4,634.65 mi (7,458.75 km) |
