| Roy to Oberkirch | 5,246.36 mi (8,443.20 km) |
| Roy to Obernburg am Main | 5,211.13 mi (8,386.50 km) |
| Roy to Obernkirchen | 5,085.73 mi (8,184.70 km) |
| Roy to Oberschleissheim | 5,366.05 mi (8,635.82 km) |
| Roy to Oberstdorf | 5,371.75 mi (8,645.00 km) |
| Roy to Obertraubling | 5,345.58 mi (8,602.88 km) |
| Roy to Obertshausen | 5,190.32 mi (8,353.02 km) |
| Roy to Oberursel | 5,175.71 mi (8,329.50 km) |
| Roy to Ochsenfurt | 5,248.29 mi (8,446.31 km) |
| Roy to Ochsenhausen | 5,327.04 mi (8,573.03 km) |
| Roy to Ochtrup | 5,033.40 mi (8,100.48 km) |
| Roy to Odenthal | 5,090.16 mi (8,191.82 km) |
| Roy to Oelde | 5,080.06 mi (8,175.57 km) |
| Roy to Oelsnitz | 5,268.49 mi (8,478.82 km) |
| Roy to Oer-Erkenschwick | 5,063.48 mi (8,148.88 km) |
