| Arcata to Oberkirch | 5,605.89 mi (9,021.80 km) |
| Arcata to Obernburg am Main | 5,558.19 mi (8,945.04 km) |
| Arcata to Obernkirchen | 5,418.81 mi (8,720.74 km) |
| Arcata to Oberschleissheim | 5,710.19 mi (9,189.66 km) |
| Arcata to Oberstdorf | 5,726.89 mi (9,216.54 km) |
| Arcata to Obertraubling | 5,682.81 mi (9,145.60 km) |
| Arcata to Obertshausen | 5,537.54 mi (8,911.81 km) |
| Arcata to Oberursel | 5,523.35 mi (8,888.97 km) |
| Arcata to Ochsenfurt | 5,592.02 mi (8,999.48 km) |
| Arcata to Ochsenhausen | 5,680.16 mi (9,141.33 km) |
| Arcata to Ochtrup | 5,375.59 mi (8,651.17 km) |
| Arcata to Odenthal | 5,439.68 mi (8,754.32 km) |
| Arcata to Oelde | 5,420.13 mi (8,722.86 km) |
| Arcata to Oelsnitz | 5,597.71 mi (9,008.65 km) |
| Arcata to Oer-Erkenschwick | 5,408.77 mi (8,704.58 km) |
