| Durham to Olympia Heights (Florida) | 4,344.84 mi (6,992.34 km) |
| Durham to Omaha (Nebraska) | 4,123.18 mi (6,635.62 km) |
| Durham to On Top of the World Designated Place (Florida) | 4,242.36 mi (6,827.42 km) |
| Durham to Onalaska (Wisconsin) | 3,822.32 mi (6,151.43 km) |
| Durham to Oneida (New York) | 3,293.54 mi (5,300.44 km) |
| Durham to Oneonta (New York) | 3,299.40 mi (5,309.87 km) |
| Durham to Ontario (California) | 5,228.29 mi (8,414.12 km) |
| Durham to Ontario (Oregon) | 4,633.12 mi (7,456.28 km) |
| Durham to Opa-locka (Florida) | 4,332.16 mi (6,971.93 km) |
| Durham to Opelika (Alabama) | 4,176.29 mi (6,721.09 km) |
| Durham to Opelousas (Louisiana) | 4,543.78 mi (7,312.51 km) |
| Durham to Orange (California) | 5,248.64 mi (8,446.88 km) |
| Durham to Orange (Texas) | 4,628.42 mi (7,448.73 km) |
| Durham to Orange City (Florida) | 4,212.22 mi (6,778.91 km) |
| Durham to Orangeburg (South Carolina) | 3,959.46 mi (6,372.14 km) |
