| Coos Bay to Olympia Heights (Florida) | 2,739.50 mi (4,408.80 km) |
| Coos Bay to Omaha (Nebraska) | 1,440.13 mi (2,317.66 km) |
| Coos Bay to On Top of the World Designated Place (Florida) | 2,504.84 mi (4,031.15 km) |
| Coos Bay to Onalaska (Wisconsin) | 1,640.82 mi (2,640.65 km) |
| Coos Bay to Oneida (New York) | 2,409.79 mi (3,878.18 km) |
| Coos Bay to Oneonta (New York) | 2,451.88 mi (3,945.92 km) |
| Coos Bay to Ontario (California) | 737.01 mi (1,186.10 km) |
| Coos Bay to Ontario (Oregon) | 365.11 mi (587.59 km) |
| Coos Bay to Opa-locka (Florida) | 2,736.19 mi (4,403.47 km) |
| Coos Bay to Opelika (Alabama) | 2,217.63 mi (3,568.94 km) |
| Coos Bay to Opelousas (Louisiana) | 1,968.25 mi (3,167.59 km) |
| Coos Bay to Orange (California) | 746.12 mi (1,200.77 km) |
| Coos Bay to Orange (Texas) | 1,904.28 mi (3,064.65 km) |
| Coos Bay to Orange City (Florida) | 2,561.14 mi (4,121.75 km) |
| Coos Bay to Orangeburg (South Carolina) | 2,414.73 mi (3,886.13 km) |
