| Monserrat to Oakley (California) | 5,918.49 mi (9,524.89 km) |
| Monserrat to Oakton (Virginia) | 3,976.16 mi (6,399.01 km) |
| Monserrat to Oakville (Missouri) | 4,600.90 mi (7,404.43 km) |
| Monserrat to Oatfield (Oregon) | 5,565.92 mi (8,957.49 km) |
| Monserrat to Ocala (Florida) | 4,552.98 mi (7,327.31 km) |
| Monserrat to Ocean Acres (New Jersey) | 3,805.16 mi (6,123.81 km) |
| Monserrat to Ocean City (New Jersey) | 3,834.71 mi (6,171.37 km) |
| Monserrat to Ocean Pines (Maryland) | 3,887.88 mi (6,256.95 km) |
| Monserrat to Ocean Pointe (Hawaii) | 7,998.32 mi (12,872.05 km) |
| Monserrat to Ocean Springs (Mississippi) | 4,836.08 mi (7,782.92 km) |
| Monserrat to Oceanside (California) | 5,993.44 mi (9,645.51 km) |
| Monserrat to Oceanside (New York) | 3,748.55 mi (6,032.70 km) |
| Monserrat to Ocoee (Florida) | 4,544.25 mi (7,313.27 km) |
| Monserrat to Oconomowoc (Wisconsin) | 4,352.53 mi (7,004.72 km) |
| Monserrat to Odenton (Maryland) | 3,941.49 mi (6,343.21 km) |
