| Lockport to Oberkirch | 4,394.14 mi (7,071.68 km) |
| Lockport to Obernburg am Main | 4,383.43 mi (7,054.45 km) |
| Lockport to Obernkirchen | 4,290.24 mi (6,904.47 km) |
| Lockport to Oberschleissheim | 4,536.38 mi (7,300.60 km) |
| Lockport to Oberstdorf | 4,521.84 mi (7,277.20 km) |
| Lockport to Obertraubling | 4,529.49 mi (7,289.51 km) |
| Lockport to Obertshausen | 4,363.33 mi (7,022.11 km) |
| Lockport to Oberursel | 4,348.65 mi (6,998.48 km) |
| Lockport to Ochsenfurt | 4,424.97 mi (7,121.30 km) |
| Lockport to Ochsenhausen | 4,482.82 mi (7,214.40 km) |
| Lockport to Ochtrup | 4,223.55 mi (6,797.15 km) |
| Lockport to Odenthal | 4,263.77 mi (6,861.88 km) |
| Lockport to Oelde | 4,271.79 mi (6,874.78 km) |
| Lockport to Oelsnitz | 4,470.88 mi (7,195.19 km) |
| Lockport to Oer-Erkenschwick | 4,246.30 mi (6,833.76 km) |
