| Ionia to Odessa (Texas) | 1,214.79 mi (1,955.01 km) |
| Ionia to Ogden (Utah) | 1,378.13 mi (2,217.88 km) |
| Ionia to Oildale (California) | 1,877.22 mi (3,021.09 km) |
| Ionia to Ojus (Florida) | 1,208.28 mi (1,944.54 km) |
| Ionia to Okemos (Michigan) | 38.31 mi (61.65 km) |
| Ionia to Oklahoma City (Oklahoma) | 842.65 mi (1,356.12 km) |
| Ionia to Okmulgee (Oklahoma) | 773.86 mi (1,245.41 km) |
| Ionia to Olathe (Kansas) | 581.62 mi (936.02 km) |
| Ionia to Old Jamestown (Missouri) | 394.57 mi (635.00 km) |
| Ionia to Oldsmar (Florida) | 1,040.02 mi (1,673.76 km) |
| Ionia to Olean (New York) | 343.63 mi (553.03 km) |
| Ionia to Olive Branch (Mississippi) | 610.10 mi (981.85 km) |
| Ionia to Olivehurst (California) | 1,905.43 mi (3,066.49 km) |
| Ionia to Olney (Maryland) | 493.43 mi (794.10 km) |
| Ionia to Olympia (Washington) | 1,850.37 mi (2,977.88 km) |
