| Willimantic to Oberkirch | 3,759.38 mi (6,050.15 km) |
| Willimantic to Obernburg am Main | 3,764.39 mi (6,058.20 km) |
| Willimantic to Obernkirchen | 3,694.87 mi (5,946.32 km) |
| Willimantic to Oberschleissheim | 3,911.37 mi (6,294.74 km) |
| Willimantic to Oberstdorf | 3,884.77 mi (6,251.94 km) |
| Willimantic to Obertraubling | 3,913.11 mi (6,297.55 km) |
| Willimantic to Obertshausen | 3,745.39 mi (6,027.62 km) |
| Willimantic to Oberursel | 3,731.14 mi (6,004.69 km) |
| Willimantic to Ochsenfurt | 3,807.35 mi (6,127.34 km) |
| Willimantic to Ochsenhausen | 3,850.40 mi (6,196.62 km) |
| Willimantic to Ochtrup | 3,621.29 mi (5,827.91 km) |
| Willimantic to Odenthal | 3,649.49 mi (5,873.28 km) |
| Willimantic to Oelde | 3,668.85 mi (5,904.45 km) |
| Willimantic to Oelsnitz | 3,867.96 mi (6,224.87 km) |
| Willimantic to Oer-Erkenschwick | 3,638.52 mi (5,855.63 km) |
