| Den Helder to Odessa (Texas) | 5,132.11 mi (8,259.33 km) |
| Den Helder to Ogden (Utah) | 4,920.27 mi (7,918.40 km) |
| Den Helder to Oildale (California) | 5,463.72 mi (8,793.01 km) |
| Den Helder to Ojus (Florida) | 4,600.87 mi (7,404.39 km) |
| Den Helder to Okemos (Michigan) | 3,924.08 mi (6,315.20 km) |
| Den Helder to Oklahoma City (Oklahoma) | 4,765.93 mi (7,670.03 km) |
| Den Helder to Okmulgee (Oklahoma) | 4,704.38 mi (7,570.97 km) |
| Den Helder to Olathe (Kansas) | 4,489.89 mi (7,225.77 km) |
| Den Helder to Old Jamestown (Missouri) | 4,329.63 mi (6,967.87 km) |
| Den Helder to Oldsmar (Florida) | 4,592.86 mi (7,391.49 km) |
| Den Helder to Olean (New York) | 3,730.59 mi (6,003.81 km) |
| Den Helder to Olive Branch (Mississippi) | 4,512.77 mi (7,262.61 km) |
| Den Helder to Olivehurst (California) | 5,316.03 mi (8,555.32 km) |
| Den Helder to Olney (Maryland) | 3,816.24 mi (6,141.65 km) |
| Den Helder to Olympia (Washington) | 4,874.09 mi (7,844.08 km) |
