| Dokkum to Olympia Heights (Florida) | 4,664.59 mi (7,506.94 km) |
| Dokkum to Omaha (Nebraska) | 4,435.78 mi (7,138.70 km) |
| Dokkum to On Top of the World Designated Place (Florida) | 4,564.39 mi (7,345.68 km) |
| Dokkum to Onalaska (Wisconsin) | 4,136.27 mi (6,656.68 km) |
| Dokkum to Oneida (New York) | 3,615.90 mi (5,819.23 km) |
| Dokkum to Oneonta (New York) | 3,622.02 mi (5,829.07 km) |
| Dokkum to Ontario (California) | 5,521.84 mi (8,886.54 km) |
| Dokkum to Ontario (Oregon) | 4,913.48 mi (7,907.49 km) |
| Dokkum to Opa-locka (Florida) | 4,651.96 mi (7,486.61 km) |
| Dokkum to Opelika (Alabama) | 4,499.09 mi (7,240.58 km) |
| Dokkum to Opelousas (Louisiana) | 4,865.78 mi (7,830.71 km) |
| Dokkum to Orange (California) | 5,542.12 mi (8,919.18 km) |
| Dokkum to Orange (Texas) | 4,949.99 mi (7,966.25 km) |
| Dokkum to Orange City (Florida) | 4,533.87 mi (7,296.56 km) |
| Dokkum to Orangeburg (South Carolina) | 4,282.14 mi (6,891.44 km) |
