| Avondale to Olympia Heights (Florida) | 1,985.22 mi (3,194.90 km) |
| Avondale to Omaha (Nebraska) | 1,043.94 mi (1,680.07 km) |
| Avondale to On Top of the World Designated Place (Florida) | 1,792.44 mi (2,884.65 km) |
| Avondale to Onalaska (Wisconsin) | 1,344.90 mi (2,164.40 km) |
| Avondale to Oneida (New York) | 2,080.24 mi (3,347.82 km) |
| Avondale to Oneonta (New York) | 2,106.13 mi (3,389.48 km) |
| Avondale to Ontario (California) | 306.91 mi (493.93 km) |
| Avondale to Ontario (Oregon) | 776.33 mi (1,249.38 km) |
| Avondale to Opa-locka (Florida) | 1,985.29 mi (3,195.02 km) |
| Avondale to Opelika (Alabama) | 1,557.48 mi (2,506.52 km) |
| Avondale to Opelousas (Louisiana) | 1,201.01 mi (1,932.84 km) |
| Avondale to Orange (California) | 317.71 mi (511.30 km) |
| Avondale to Orange (Texas) | 1,112.04 mi (1,789.66 km) |
| Avondale to Orange City (Florida) | 1,853.55 mi (2,982.99 km) |
| Avondale to Orangeburg (South Carolina) | 1,806.60 mi (2,907.44 km) |
