| Kastamonu to Oakley (California) | 6,738.93 mi (10,845.26 km) |
| Kastamonu to Oakton (Virginia) | 5,401.35 mi (8,692.63 km) |
| Kastamonu to Oakville (Missouri) | 5,895.13 mi (9,487.30 km) |
| Kastamonu to Oatfield (Oregon) | 6,265.30 mi (10,083.03 km) |
| Kastamonu to Ocala (Florida) | 6,076.67 mi (9,779.45 km) |
| Kastamonu to Ocean Acres (New Jersey) | 5,243.57 mi (8,438.70 km) |
| Kastamonu to Ocean City (New Jersey) | 5,278.43 mi (8,494.81 km) |
| Kastamonu to Ocean Pines (Maryland) | 5,341.60 mi (8,596.48 km) |
| Kastamonu to Ocean Pointe (Hawaii) | 8,039.67 mi (12,938.60 km) |
| Kastamonu to Ocean Springs (Mississippi) | 6,272.81 mi (10,095.11 km) |
| Kastamonu to Oceanside (California) | 6,964.21 mi (11,207.81 km) |
| Kastamonu to Oceanside (New York) | 5,177.01 mi (8,331.59 km) |
| Kastamonu to Ocoee (Florida) | 6,081.79 mi (9,787.69 km) |
| Kastamonu to Oconomowoc (Wisconsin) | 5,585.87 mi (8,989.59 km) |
| Kastamonu to Odenton (Maryland) | 5,369.39 mi (8,641.19 km) |
