| Grants Pass to Oberkirch | 5,492.65 mi (8,839.57 km) |
| Grants Pass to Obernburg am Main | 5,444.50 mi (8,762.07 km) |
| Grants Pass to Obernkirchen | 5,304.71 mi (8,537.10 km) |
| Grants Pass to Oberschleissheim | 5,596.34 mi (9,006.44 km) |
| Grants Pass to Oberstdorf | 5,613.44 mi (9,033.96 km) |
| Grants Pass to Obertraubling | 5,568.75 mi (8,962.04 km) |
| Grants Pass to Obertshausen | 5,423.86 mi (8,728.86 km) |
| Grants Pass to Oberursel | 5,409.68 mi (8,706.04 km) |
| Grants Pass to Ochsenfurt | 5,478.19 mi (8,816.30 km) |
| Grants Pass to Ochsenhausen | 5,566.64 mi (8,958.64 km) |
| Grants Pass to Ochtrup | 5,261.78 mi (8,468.02 km) |
| Grants Pass to Odenthal | 5,326.11 mi (8,571.55 km) |
| Grants Pass to Oelde | 5,306.24 mi (8,539.57 km) |
| Grants Pass to Oelsnitz | 5,483.45 mi (8,824.76 km) |
| Grants Pass to Oer-Erkenschwick | 5,295.06 mi (8,521.58 km) |
