| Monserrat to Odessa (Texas) | 5,415.96 mi (8,716.15 km) |
| Monserrat to Ogden (Utah) | 5,396.65 mi (8,685.06 km) |
| Monserrat to Oildale (California) | 5,950.20 mi (9,575.92 km) |
| Monserrat to Ojus (Florida) | 4,573.88 mi (7,360.95 km) |
| Monserrat to Okemos (Michigan) | 4,184.95 mi (6,735.02 km) |
| Monserrat to Oklahoma City (Oklahoma) | 5,044.54 mi (8,118.40 km) |
| Monserrat to Okmulgee (Oklahoma) | 4,970.28 mi (7,998.90 km) |
| Monserrat to Olathe (Kansas) | 4,786.68 mi (7,703.42 km) |
| Monserrat to Old Jamestown (Missouri) | 4,584.76 mi (7,378.46 km) |
| Monserrat to Oldsmar (Florida) | 4,622.09 mi (7,438.54 km) |
| Monserrat to Olean (New York) | 3,931.92 mi (6,327.81 km) |
| Monserrat to Olive Branch (Mississippi) | 4,710.55 mi (7,580.89 km) |
| Monserrat to Olivehurst (California) | 5,857.43 mi (9,426.63 km) |
| Monserrat to Olney (Maryland) | 3,957.10 mi (6,368.34 km) |
| Monserrat to Olympia (Washington) | 5,491.42 mi (8,837.59 km) |
