| Dalkeith to Olympia Heights (Florida) | 4,278.68 mi (6,885.87 km) |
| Dalkeith to Omaha (Nebraska) | 4,034.66 mi (6,493.15 km) |
| Dalkeith to On Top of the World Designated Place (Florida) | 4,171.48 mi (6,713.34 km) |
| Dalkeith to Onalaska (Wisconsin) | 3,734.49 mi (6,010.08 km) |
| Dalkeith to Oneida (New York) | 3,214.95 mi (5,173.96 km) |
| Dalkeith to Oneonta (New York) | 3,221.84 mi (5,185.06 km) |
| Dalkeith to Ontario (California) | 5,134.21 mi (8,262.71 km) |
| Dalkeith to Ontario (Oregon) | 4,537.28 mi (7,302.04 km) |
| Dalkeith to Opa-locka (Florida) | 4,265.93 mi (6,865.35 km) |
| Dalkeith to Opelika (Alabama) | 4,099.95 mi (6,598.23 km) |
| Dalkeith to Opelousas (Louisiana) | 4,464.03 mi (7,184.16 km) |
| Dalkeith to Orange (California) | 5,154.55 mi (8,295.44 km) |
| Dalkeith to Orange (Texas) | 4,547.75 mi (7,318.90 km) |
| Dalkeith to Orange City (Florida) | 4,142.37 mi (6,666.51 km) |
| Dalkeith to Orangeburg (South Carolina) | 3,886.01 mi (6,253.93 km) |
