| Okemos to Oswego (Illinois) | 212.88 mi (342.60 km) |
| Okemos to Oswego (New York) | 402.50 mi (647.76 km) |
| Okemos to Otsego (Minnesota) | 490.33 mi (789.11 km) |
| Okemos to Ottawa (Illinois) | 244.88 mi (394.10 km) |
| Okemos to Ottawa (Kansas) | 634.91 mi (1,021.79 km) |
| Okemos to Ottumwa (Iowa) | 427.89 mi (688.61 km) |
| Okemos to Overland (Missouri) | 416.99 mi (671.08 km) |
| Okemos to Overland Park (Kansas) | 598.08 mi (962.52 km) |
| Okemos to Overlea (Maryland) | 471.57 mi (758.92 km) |
| Okemos to Oviedo (Florida) | 987.13 mi (1,588.64 km) |
| Okemos to Owasso (Oklahoma) | 752.02 mi (1,210.26 km) |
| Okemos to Owatonna (Minnesota) | 452.66 mi (728.49 km) |
| Okemos to Owensboro (Kentucky) | 370.39 mi (596.08 km) |
| Okemos to Owings Mills (Maryland) | 457.45 mi (736.19 km) |
| Okemos to Owosso (Michigan) | 23.36 mi (37.59 km) |
