| Monserrato to Odessa (Texas) | 5,848.86 mi (9,412.83 km) |
| Monserrato to Ogden (Utah) | 5,758.18 mi (9,266.89 km) |
| Monserrato to Oildale (California) | 6,310.52 mi (10,155.81 km) |
| Monserrato to Ojus (Florida) | 5,073.04 mi (8,164.27 km) |
| Monserrato to Okemos (Michigan) | 4,616.25 mi (7,429.14 km) |
| Monserrato to Oklahoma City (Oklahoma) | 5,476.67 mi (8,813.86 km) |
| Monserrato to Okmulgee (Oklahoma) | 5,405.80 mi (8,699.79 km) |
| Monserrato to Olathe (Kansas) | 5,211.37 mi (8,386.88 km) |
| Monserrato to Old Jamestown (Missouri) | 5,020.83 mi (8,080.24 km) |
| Monserrato to Oldsmar (Florida) | 5,112.12 mi (8,227.17 km) |
| Monserrato to Olean (New York) | 4,378.20 mi (7,046.04 km) |
| Monserrato to Olive Branch (Mississippi) | 5,163.60 mi (8,310.01 km) |
| Monserrato to Olivehurst (California) | 6,191.47 mi (9,964.21 km) |
| Monserrato to Olney (Maryland) | 4,419.17 mi (7,111.96 km) |
| Monserrato to Olympia (Washington) | 5,783.58 mi (9,307.77 km) |
