| Fairfield to Oakley (California) | 25.97 mi (41.79 km) |
| Fairfield to Oakton (Virginia) | 2,391.98 mi (3,849.52 km) |
| Fairfield to Oakville (Missouri) | 1,709.79 mi (2,751.65 km) |
| Fairfield to Oatfield (Oregon) | 495.15 mi (796.86 km) |
| Fairfield to Ocala (Florida) | 2,356.69 mi (3,792.73 km) |
| Fairfield to Ocean Acres (New Jersey) | 2,535.41 mi (4,080.34 km) |
| Fairfield to Ocean City (New Jersey) | 2,526.50 mi (4,066.01 km) |
| Fairfield to Ocean Pines (Maryland) | 2,513.15 mi (4,044.52 km) |
| Fairfield to Ocean Pointe (Hawaii) | 2,433.64 mi (3,916.57 km) |
| Fairfield to Ocean Springs (Mississippi) | 1,961.18 mi (3,156.22 km) |
| Fairfield to Oceanside (California) | 437.09 mi (703.43 km) |
| Fairfield to Oceanside (New York) | 2,554.75 mi (4,111.47 km) |
| Fairfield to Ocoee (Florida) | 2,408.59 mi (3,876.25 km) |
| Fairfield to Oconomowoc (Wisconsin) | 1,776.61 mi (2,859.17 km) |
| Fairfield to Odenton (Maryland) | 2,420.90 mi (3,896.06 km) |
