| Somero to Olympia Heights (Florida) | 5,125.97 mi (8,249.45 km) |
| Somero to Omaha (Nebraska) | 4,620.12 mi (7,435.36 km) |
| Somero to On Top of the World Designated Place (Florida) | 4,982.15 mi (8,018.00 km) |
| Somero to Onalaska (Wisconsin) | 4,342.39 mi (6,988.40 km) |
| Somero to Oneida (New York) | 3,969.22 mi (6,387.84 km) |
| Somero to Oneonta (New York) | 3,987.06 mi (6,416.55 km) |
| Somero to Ontario (California) | 5,536.20 mi (8,909.65 km) |
| Somero to Ontario (Oregon) | 4,871.84 mi (7,840.47 km) |
| Somero to Opa-locka (Florida) | 5,112.84 mi (8,228.33 km) |
| Somero to Opelika (Alabama) | 4,859.19 mi (7,820.12 km) |
| Somero to Opelousas (Louisiana) | 5,176.61 mi (8,330.94 km) |
| Somero to Orange (California) | 5,555.51 mi (8,940.73 km) |
| Somero to Orange (Texas) | 5,246.83 mi (8,443.96 km) |
| Somero to Orange City (Florida) | 4,962.39 mi (7,986.20 km) |
| Somero to Orangeburg (South Carolina) | 4,678.17 mi (7,528.79 km) |
