| Salt Lake City to Olympia (Washington) | 695.45 mi (1,119.23 km) |
| Salt Lake City to Olympia Heights (Florida) | 2,084.22 mi (3,354.23 km) |
| Salt Lake City to Omaha (Nebraska) | 827.25 mi (1,331.33 km) |
| Salt Lake City to On Top of the World Designated Place (Florida) | 1,850.50 mi (2,978.09 km) |
| Salt Lake City to Onalaska (Wisconsin) | 1,077.07 mi (1,733.38 km) |
| Salt Lake City to Oneida (New York) | 1,856.60 mi (2,987.91 km) |
| Salt Lake City to Oneonta (New York) | 1,892.75 mi (3,046.09 km) |
| Salt Lake City to Ontario (California) | 559.85 mi (901.00 km) |
| Salt Lake City to Ontario (Oregon) | 341.38 mi (549.40 km) |
| Salt Lake City to Opa-locka (Florida) | 2,080.91 mi (3,348.91 km) |
| Salt Lake City to Opelika (Alabama) | 1,566.41 mi (2,520.90 km) |
| Salt Lake City to Opelousas (Louisiana) | 1,315.69 mi (2,117.39 km) |
| Salt Lake City to Orange (California) | 580.20 mi (933.74 km) |
| Salt Lake City to Orange (Texas) | 1,255.92 mi (2,021.21 km) |
| Salt Lake City to Orange City (Florida) | 1,907.25 mi (3,069.42 km) |
