| Michigan City to Oakley (California) | 1,852.28 mi (2,980.95 km) |
| Michigan City to Oakton (Virginia) | 540.14 mi (869.27 km) |
| Michigan City to Oakville (Missouri) | 289.88 mi (466.51 km) |
| Michigan City to Oatfield (Oregon) | 1,791.87 mi (2,883.73 km) |
| Michigan City to Ocala (Florida) | 905.23 mi (1,456.83 km) |
| Michigan City to Ocean Acres (New Jersey) | 672.35 mi (1,082.04 km) |
| Michigan City to Ocean City (New Jersey) | 665.65 mi (1,071.26 km) |
| Michigan City to Ocean Pines (Maryland) | 660.41 mi (1,062.83 km) |
| Michigan City to Ocean Pointe (Hawaii) | 4,297.40 mi (6,915.99 km) |
| Michigan City to Ocean Springs (Mississippi) | 788.07 mi (1,268.28 km) |
| Michigan City to Oceanside (California) | 1,758.25 mi (2,829.63 km) |
| Michigan City to Oceanside (New York) | 691.54 mi (1,112.92 km) |
| Michigan City to Ocoee (Florida) | 955.42 mi (1,537.59 km) |
| Michigan City to Oconomowoc (Wisconsin) | 126.92 mi (204.25 km) |
| Michigan City to Odenton (Maryland) | 565.35 mi (909.84 km) |
