| Michigan City to Orangevale (California) | 1,812.76 mi (2,917.35 km) |
| Michigan City to Orchards (Washington) | 1,787.36 mi (2,876.48 km) |
| Michigan City to Orcutt (California) | 1,867.11 mi (3,004.83 km) |
| Michigan City to Oregon (Ohio) | 177.39 mi (285.48 km) |
| Michigan City to Oregon (Wisconsin) | 153.74 mi (247.41 km) |
| Michigan City to Oregon City (Oregon) | 1,792.19 mi (2,884.25 km) |
| Michigan City to Orem (Utah) | 1,293.89 mi (2,082.31 km) |
| Michigan City to Orinda (California) | 1,879.72 mi (3,025.12 km) |
| Michigan City to Orland Park (Illinois) | 51.73 mi (83.26 km) |
| Michigan City to Orlando (Florida) | 965.67 mi (1,554.10 km) |
| Michigan City to Ormond Beach (Florida) | 916.23 mi (1,474.52 km) |
| Michigan City to Oro Valley (Arizona) | 1,469.14 mi (2,364.36 km) |
| Michigan City to Oroville (California) | 1,814.03 mi (2,919.39 km) |
| Michigan City to Oshkosh (Wisconsin) | 181.38 mi (291.90 km) |
| Michigan City to Oskaloosa (Iowa) | 299.98 mi (482.78 km) |
