| Monserrato to Oakley (California) | 6,256.68 mi (10,069.15 km) |
| Monserrato to Oakton (Virginia) | 4,438.90 mi (7,143.71 km) |
| Monserrato to Oakville (Missouri) | 5,038.59 mi (8,108.82 km) |
| Monserrato to Oatfield (Oregon) | 5,866.98 mi (9,441.98 km) |
| Monserrato to Ocala (Florida) | 5,040.77 mi (8,112.33 km) |
| Monserrato to Ocean Acres (New Jersey) | 4,269.56 mi (6,871.19 km) |
| Monserrato to Ocean City (New Jersey) | 4,300.59 mi (6,921.13 km) |
| Monserrato to Ocean Pines (Maryland) | 4,356.49 mi (7,011.10 km) |
| Monserrato to Ocean Pointe (Hawaii) | 8,170.90 mi (13,149.79 km) |
| Monserrato to Ocean Springs (Mississippi) | 5,307.64 mi (8,541.83 km) |
| Monserrato to Oceanside (California) | 6,369.95 mi (10,251.44 km) |
| Monserrato to Oceanside (New York) | 4,210.13 mi (6,775.54 km) |
| Monserrato to Ocoee (Florida) | 5,034.73 mi (8,102.62 km) |
| Monserrato to Oconomowoc (Wisconsin) | 4,772.87 mi (7,681.19 km) |
| Monserrato to Odenton (Maryland) | 4,404.57 mi (7,088.47 km) |
