| Massillon to Oberkirch | 4,177.98 mi (6,723.82 km) |
| Massillon to Obernburg am Main | 4,175.12 mi (6,719.21 km) |
| Massillon to Obernkirchen | 4,093.30 mi (6,587.54 km) |
| Massillon to Oberschleissheim | 4,325.54 mi (6,961.28 km) |
| Massillon to Oberstdorf | 4,304.87 mi (6,928.02 km) |
| Massillon to Obertraubling | 4,322.95 mi (6,957.12 km) |
| Massillon to Obertshausen | 4,155.51 mi (6,687.64 km) |
| Massillon to Oberursel | 4,141.00 mi (6,664.29 km) |
| Massillon to Ochsenfurt | 4,217.49 mi (6,787.40 km) |
| Massillon to Ochsenhausen | 4,268.09 mi (6,868.83 km) |
| Massillon to Ochtrup | 4,023.01 mi (6,474.41 km) |
| Massillon to Odenthal | 4,057.44 mi (6,529.82 km) |
| Massillon to Oelde | 4,071.08 mi (6,551.77 km) |
| Massillon to Oelsnitz | 4,270.84 mi (6,873.25 km) |
| Massillon to Oer-Erkenschwick | 4,043.12 mi (6,506.78 km) |
