| Kastamonu to Orangevale (California) | 6,685.23 mi (10,758.83 km) |
| Kastamonu to Orchards (Washington) | 6,246.16 mi (10,052.23 km) |
| Kastamonu to Orcutt (California) | 6,920.34 mi (11,137.21 km) |
| Kastamonu to Oregon (Ohio) | 5,490.04 mi (8,835.37 km) |
| Kastamonu to Oregon (Wisconsin) | 5,624.00 mi (9,050.96 km) |
| Kastamonu to Oregon City (Oregon) | 6,269.94 mi (10,090.49 km) |
| Kastamonu to Orem (Utah) | 6,392.66 mi (10,287.99 km) |
| Kastamonu to Orinda (California) | 6,754.50 mi (10,870.32 km) |
| Kastamonu to Orland Park (Illinois) | 5,643.91 mi (9,082.99 km) |
| Kastamonu to Orlando (Florida) | 6,078.88 mi (9,783.01 km) |
| Kastamonu to Ormond Beach (Florida) | 6,027.61 mi (9,700.51 km) |
| Kastamonu to Oro Valley (Arizona) | 6,866.22 mi (11,050.12 km) |
| Kastamonu to Oroville (California) | 6,637.86 mi (10,682.60 km) |
| Kastamonu to Oshkosh (Wisconsin) | 5,539.18 mi (8,914.45 km) |
| Kastamonu to Oskaloosa (Iowa) | 5,815.93 mi (9,359.83 km) |
