| London to Orangevale (California) | 5,265.69 mi (8,474.32 km) |
| London to Orchards (Washington) | 4,899.35 mi (7,884.75 km) |
| London to Orcutt (California) | 5,462.20 mi (8,790.56 km) |
| London to Oregon (Ohio) | 3,796.13 mi (6,109.29 km) |
| London to Oregon (Wisconsin) | 3,965.27 mi (6,381.49 km) |
| London to Oregon City (Oregon) | 4,920.96 mi (7,919.53 km) |
| London to Orem (Utah) | 4,880.02 mi (7,853.63 km) |
| London to Orinda (California) | 5,340.78 mi (8,595.15 km) |
| London to Orland Park (Illinois) | 3,969.01 mi (6,387.51 km) |
| London to Orlando (Florida) | 4,340.37 mi (6,985.15 km) |
| London to Ormond Beach (Florida) | 4,289.61 mi (6,903.46 km) |
| London to Oro Valley (Arizona) | 5,288.96 mi (8,511.76 km) |
| London to Oroville (California) | 5,228.87 mi (8,415.05 km) |
| London to Oshkosh (Wisconsin) | 3,883.73 mi (6,250.27 km) |
| London to Oskaloosa (Iowa) | 4,163.90 mi (6,701.15 km) |
