| Tacoma to Oerlinghausen | 4,998.69 mi (8,044.61 km) |
| Tacoma to Oestrich-Winkel | 5,097.71 mi (8,203.97 km) |
| Tacoma to Offenburg | 5,185.49 mi (8,345.24 km) |
| Tacoma to Oftersheim | 5,148.43 mi (8,285.60 km) |
| Tacoma to Ohrdruf | 5,112.43 mi (8,227.66 km) |
| Tacoma to Ohringen | 5,180.19 mi (8,336.71 km) |
| Tacoma to Olbernhau | 5,179.21 mi (8,335.14 km) |
| Tacoma to Olching | 5,282.01 mi (8,500.58 km) |
| Tacoma to Oldenburg | 4,919.97 mi (7,917.92 km) |
| Tacoma to Oldenburg in Holstein | 4,910.56 mi (7,902.79 km) |
| Tacoma to Olfen | 4,983.49 mi (8,020.16 km) |
| Tacoma to Olpe | 5,034.62 mi (8,102.45 km) |
| Tacoma to Olsberg | 5,030.42 mi (8,095.68 km) |
| Tacoma to Oranienburg | 5,051.67 mi (8,129.87 km) |
| Tacoma to Ortenberg | 5,101.84 mi (8,210.61 km) |
