| Sun City to Olympia (Washington) | 1,080.77 mi (1,739.34 km) |
| Sun City to Olympia Heights (Florida) | 1,984.82 mi (3,194.26 km) |
| Sun City to Omaha (Nebraska) | 1,032.74 mi (1,662.03 km) |
| Sun City to On Top of the World Designated Place (Florida) | 1,790.47 mi (2,881.49 km) |
| Sun City to Onalaska (Wisconsin) | 1,333.15 mi (2,145.49 km) |
| Sun City to Oneida (New York) | 2,070.37 mi (3,331.93 km) |
| Sun City to Oneonta (New York) | 2,096.55 mi (3,374.07 km) |
| Sun City to Ontario (California) | 306.97 mi (494.01 km) |
| Sun City to Ontario (Oregon) | 761.97 mi (1,226.27 km) |
| Sun City to Opa-locka (Florida) | 1,984.78 mi (3,194.19 km) |
| Sun City to Opelika (Alabama) | 1,553.62 mi (2,500.31 km) |
| Sun City to Opelousas (Louisiana) | 1,199.82 mi (1,930.92 km) |
| Sun City to Orange (California) | 318.63 mi (512.79 km) |
| Sun City to Orange (Texas) | 1,111.62 mi (1,788.97 km) |
| Sun City to Orange City (Florida) | 1,851.52 mi (2,979.73 km) |
