| West Mifflin to Oakleaf Plantation (Florida) | 712.29 mi (1,146.32 km) |
| West Mifflin to Oakley (California) | 2,223.39 mi (3,578.21 km) |
| West Mifflin to Oakton (Virginia) | 171.85 mi (276.57 km) |
| West Mifflin to Oakville (Missouri) | 570.99 mi (918.92 km) |
| West Mifflin to Oatfield (Oregon) | 2,163.12 mi (3,481.20 km) |
| West Mifflin to Ocala (Florida) | 782.82 mi (1,259.82 km) |
| West Mifflin to Ocean Acres (New Jersey) | 300.56 mi (483.71 km) |
| West Mifflin to Ocean City (New Jersey) | 291.41 mi (468.99 km) |
| West Mifflin to Ocean Pines (Maryland) | 288.36 mi (464.07 km) |
| West Mifflin to Ocean Pointe (Hawaii) | 4,668.86 mi (7,513.81 km) |
| West Mifflin to Ocean Springs (Mississippi) | 849.13 mi (1,366.54 km) |
| West Mifflin to Oceanside (California) | 2,110.66 mi (3,396.78 km) |
| West Mifflin to Oceanside (New York) | 329.96 mi (531.03 km) |
| West Mifflin to Ocoee (Florida) | 819.02 mi (1,318.09 km) |
| West Mifflin to Oconomowoc (Wisconsin) | 481.32 mi (774.61 km) |
