| Ionia to Oak Harbor (Washington) | 1,832.18 mi (2,948.60 km) |
| Ionia to Oak Hills (Oregon) | 1,859.99 mi (2,993.36 km) |
| Ionia to Oak Lawn (Illinois) | 162.32 mi (261.23 km) |
| Ionia to Oak Park (California) | 1,903.77 mi (3,063.82 km) |
| Ionia to Oak Park (Illinois) | 157.70 mi (253.80 km) |
| Ionia to Oak Park (Michigan) | 102.27 mi (164.59 km) |
| Ionia to Oak Ridge (Florida) | 1,022.65 mi (1,645.80 km) |
| Ionia to Oak Ridge (New Jersey) | 558.94 mi (899.52 km) |
| Ionia to Oak Ridge (Tennessee) | 486.35 mi (782.70 km) |
| Ionia to Oakdale (California) | 1,902.45 mi (3,061.69 km) |
| Ionia to Oakdale (Minnesota) | 415.98 mi (669.45 km) |
| Ionia to Oakland (California) | 1,970.91 mi (3,171.87 km) |
| Ionia to Oakland (New Jersey) | 571.71 mi (920.08 km) |
| Ionia to Oakland Park (Florida) | 1,193.41 mi (1,920.60 km) |
| Ionia to Oakleaf Plantation (Florida) | 902.84 mi (1,452.98 km) |
