| Newport to Olympia Heights (Florida) | 4,313.81 mi (6,942.41 km) |
| Newport to Omaha (Nebraska) | 4,182.60 mi (6,731.25 km) |
| Newport to On Top of the World Designated Place (Florida) | 4,227.22 mi (6,803.05 km) |
| Newport to Onalaska (Wisconsin) | 3,878.72 mi (6,242.20 km) |
| Newport to Oneida (New York) | 3,309.78 mi (5,326.58 km) |
| Newport to Oneonta (New York) | 3,311.58 mi (5,329.47 km) |
| Newport to Ontario (California) | 5,323.15 mi (8,566.78 km) |
| Newport to Ontario (Oregon) | 4,747.69 mi (7,640.67 km) |
| Newport to Opa-locka (Florida) | 4,301.39 mi (6,922.43 km) |
| Newport to Opelika (Alabama) | 4,180.99 mi (6,728.66 km) |
| Newport to Opelousas (Louisiana) | 4,560.98 mi (7,340.19 km) |
| Newport to Orange (California) | 5,343.56 mi (8,599.64 km) |
| Newport to Orange (Texas) | 4,649.23 mi (7,482.21 km) |
| Newport to Orange City (Florida) | 4,193.62 mi (6,748.99 km) |
| Newport to Orangeburg (South Carolina) | 3,954.14 mi (6,363.58 km) |
