| Holbrook to Oberkirch | 3,833.38 mi (6,169.23 km) |
| Holbrook to Obernburg am Main | 3,839.11 mi (6,178.44 km) |
| Holbrook to Obernkirchen | 3,770.53 mi (6,068.08 km) |
| Holbrook to Oberschleissheim | 3,985.74 mi (6,414.43 km) |
| Holbrook to Oberstdorf | 3,958.58 mi (6,370.72 km) |
| Holbrook to Obertraubling | 3,987.86 mi (6,417.84 km) |
| Holbrook to Obertshausen | 3,820.16 mi (6,147.95 km) |
| Holbrook to Oberursel | 3,805.94 mi (6,125.07 km) |
| Holbrook to Ochsenfurt | 3,882.11 mi (6,247.64 km) |
| Holbrook to Ochsenhausen | 3,924.46 mi (6,315.80 km) |
| Holbrook to Ochtrup | 3,696.74 mi (5,949.34 km) |
| Holbrook to Odenthal | 3,724.46 mi (5,993.94 km) |
| Holbrook to Oelde | 3,744.26 mi (6,025.80 km) |
| Holbrook to Oelsnitz | 3,943.26 mi (6,346.06 km) |
| Holbrook to Oer-Erkenschwick | 3,713.75 mi (5,976.71 km) |
