| Llanes to Olympia Heights (Florida) | 4,320.51 mi (6,953.19 km) |
| Llanes to Omaha (Nebraska) | 4,410.52 mi (7,098.05 km) |
| Llanes to On Top of the World Designated Place (Florida) | 4,275.25 mi (6,880.35 km) |
| Llanes to Onalaska (Wisconsin) | 4,104.72 mi (6,605.90 km) |
| Llanes to Oneida (New York) | 3,453.57 mi (5,557.98 km) |
| Llanes to Oneonta (New York) | 3,445.66 mi (5,545.25 km) |
| Llanes to Ontario (California) | 5,618.17 mi (9,041.57 km) |
| Llanes to Ontario (Oregon) | 5,094.05 mi (8,198.07 km) |
| Llanes to Opa-locka (Florida) | 4,308.99 mi (6,934.65 km) |
| Llanes to Opelika (Alabama) | 4,278.72 mi (6,885.94 km) |
| Llanes to Opelousas (Louisiana) | 4,682.48 mi (7,535.73 km) |
| Llanes to Orange (California) | 5,638.51 mi (9,074.30 km) |
| Llanes to Orange (Texas) | 4,778.03 mi (7,689.49 km) |
| Llanes to Orange City (Florida) | 4,233.71 mi (6,813.50 km) |
| Llanes to Orangeburg (South Carolina) | 4,031.70 mi (6,488.39 km) |
