| Keene to Oswego (Illinois) | 822.74 mi (1,324.08 km) |
| Keene to Oswego (New York) | 214.38 mi (345.01 km) |
| Keene to Otsego (Minnesota) | 1,066.56 mi (1,716.45 km) |
| Keene to Ottawa (Illinois) | 852.25 mi (1,371.57 km) |
| Keene to Ottawa (Kansas) | 1,234.30 mi (1,986.41 km) |
| Keene to Ottumwa (Iowa) | 1,039.31 mi (1,672.61 km) |
| Keene to Overland (Missouri) | 987.11 mi (1,588.60 km) |
| Keene to Overland Park (Kansas) | 1,198.16 mi (1,928.26 km) |
| Keene to Overlea (Maryland) | 330.82 mi (532.40 km) |
| Keene to Oviedo (Florida) | 1,104.35 mi (1,777.28 km) |
| Keene to Owasso (Oklahoma) | 1,328.88 mi (2,138.63 km) |
| Keene to Owatonna (Minnesota) | 1,048.82 mi (1,687.92 km) |
| Keene to Owensboro (Kentucky) | 857.11 mi (1,379.38 km) |
| Keene to Owings Mills (Maryland) | 337.99 mi (543.95 km) |
| Keene to Owosso (Michigan) | 599.90 mi (965.45 km) |
