| Peso da Regua to Olympia Heights (Florida) | 4,196.00 mi (6,752.81 km) |
| Peso da Regua to Omaha (Nebraska) | 4,365.56 mi (7,025.70 km) |
| Peso da Regua to On Top of the World Designated Place (Florida) | 4,164.57 mi (6,702.23 km) |
| Peso da Regua to Onalaska (Wisconsin) | 4,061.01 mi (6,535.56 km) |
| Peso da Regua to Oneida (New York) | 3,382.91 mi (5,444.27 km) |
| Peso da Regua to Oneonta (New York) | 3,371.45 mi (5,425.82 km) |
| Peso da Regua to Ontario (California) | 5,594.95 mi (9,004.21 km) |
| Peso da Regua to Ontario (Oregon) | 5,097.19 mi (8,203.13 km) |
| Peso da Regua to Opa-locka (Florida) | 4,184.83 mi (6,734.83 km) |
| Peso da Regua to Opelika (Alabama) | 4,185.17 mi (6,735.38 km) |
| Peso da Regua to Opelousas (Louisiana) | 4,595.02 mi (7,394.97 km) |
| Peso da Regua to Orange (California) | 5,615.15 mi (9,036.72 km) |
| Peso da Regua to Orange (Texas) | 4,692.67 mi (7,552.12 km) |
| Peso da Regua to Orange City (Florida) | 4,120.62 mi (6,631.50 km) |
| Peso da Regua to Orangeburg (South Carolina) | 3,932.65 mi (6,328.99 km) |
