| Loudoun Valley Estates to Olivares | 3,771.02 mi (6,068.87 km) |
| Loudoun Valley Estates to Olivenza | 3,687.35 mi (5,934.22 km) |
| Loudoun Valley Estates to Olot | 4,042.13 mi (6,505.18 km) |
| Loudoun Valley Estates to Onate | 3,790.96 mi (6,100.95 km) |
| Loudoun Valley Estates to Onda | 3,980.87 mi (6,406.59 km) |
| Loudoun Valley Estates to Onteniente | 3,999.45 mi (6,436.49 km) |
| Loudoun Valley Estates to Orihuela | 4,005.96 mi (6,446.96 km) |
| Loudoun Valley Estates to Osuna | 3,828.53 mi (6,161.42 km) |
| Loudoun Valley Estates to Ourense | 3,553.12 mi (5,718.19 km) |
| Loudoun Valley Estates to Oviedo | 3,622.67 mi (5,830.13 km) |
| Loudoun Valley Estates to Paiporta | 3,989.84 mi (6,421.03 km) |
| Loudoun Valley Estates to Pajara | 3,646.28 mi (5,868.12 km) |
| Loudoun Valley Estates to Palafolls | 4,069.90 mi (6,549.87 km) |
| Loudoun Valley Estates to Palafrugell | 4,081.24 mi (6,568.12 km) |
| Loudoun Valley Estates to Palamos | 4,081.88 mi (6,569.16 km) |
