| Boise to Oswego (Illinois) | 1,417.17 mi (2,280.71 km) |
| Boise to Oswego (New York) | 1,971.05 mi (3,172.09 km) |
| Boise to Otsego (Minnesota) | 1,117.76 mi (1,798.87 km) |
| Boise to Ottawa (Illinois) | 1,398.69 mi (2,250.97 km) |
| Boise to Ottawa (Kansas) | 1,141.44 mi (1,836.98 km) |
| Boise to Ottumwa (Iowa) | 1,225.38 mi (1,972.06 km) |
| Boise to Overland (Missouri) | 1,381.38 mi (2,223.11 km) |
| Boise to Overland Park (Kansas) | 1,161.89 mi (1,869.88 km) |
| Boise to Overlea (Maryland) | 2,056.49 mi (3,309.61 km) |
| Boise to Oviedo (Florida) | 2,188.93 mi (3,522.75 km) |
| Boise to Owasso (Oklahoma) | 1,188.68 mi (1,913.00 km) |
| Boise to Owatonna (Minnesota) | 1,142.85 mi (1,839.24 km) |
| Boise to Owensboro (Kentucky) | 1,569.13 mi (2,525.27 km) |
| Boise to Owings Mills (Maryland) | 2,041.68 mi (3,285.76 km) |
| Boise to Owosso (Michigan) | 1,602.39 mi (2,578.79 km) |
