| Grants Pass to Oswego (Illinois) | 1,783.14 mi (2,869.69 km) |
| Grants Pass to Oswego (New York) | 2,338.02 mi (3,762.68 km) |
| Grants Pass to Otsego (Minnesota) | 1,484.78 mi (2,389.52 km) |
| Grants Pass to Ottawa (Illinois) | 1,763.98 mi (2,838.85 km) |
| Grants Pass to Ottawa (Kansas) | 1,490.84 mi (2,399.28 km) |
| Grants Pass to Ottumwa (Iowa) | 1,588.26 mi (2,556.06 km) |
| Grants Pass to Overland (Missouri) | 1,738.18 mi (2,797.33 km) |
| Grants Pass to Overland Park (Kansas) | 1,513.83 mi (2,436.27 km) |
| Grants Pass to Overlea (Maryland) | 2,423.04 mi (3,899.51 km) |
| Grants Pass to Oviedo (Florida) | 2,522.35 mi (4,059.33 km) |
| Grants Pass to Owasso (Oklahoma) | 1,521.67 mi (2,448.89 km) |
| Grants Pass to Owatonna (Minnesota) | 1,510.39 mi (2,430.73 km) |
| Grants Pass to Owensboro (Kentucky) | 1,926.21 mi (3,099.93 km) |
| Grants Pass to Owings Mills (Maryland) | 2,408.20 mi (3,875.63 km) |
| Grants Pass to Owosso (Michigan) | 1,969.92 mi (3,170.29 km) |
