| Lake Norman of Catawba to Olivares | 4,041.26 mi (6,503.77 km) |
| Lake Norman of Catawba to Olivenza | 3,959.98 mi (6,372.98 km) |
| Lake Norman of Catawba to Olot | 4,328.92 mi (6,966.72 km) |
| Lake Norman of Catawba to Onate | 4,076.41 mi (6,560.35 km) |
| Lake Norman of Catawba to Onda | 4,261.73 mi (6,858.59 km) |
| Lake Norman of Catawba to Onteniente | 4,277.69 mi (6,884.28 km) |
| Lake Norman of Catawba to Orihuela | 4,282.33 mi (6,891.75 km) |
| Lake Norman of Catawba to Osuna | 4,099.26 mi (6,597.12 km) |
| Lake Norman of Catawba to Ourense | 3,833.92 mi (6,170.10 km) |
| Lake Norman of Catawba to Oviedo | 3,906.84 mi (6,287.46 km) |
| Lake Norman of Catawba to Paiporta | 4,269.50 mi (6,871.09 km) |
| Lake Norman of Catawba to Pajara | 3,877.99 mi (6,241.02 km) |
| Lake Norman of Catawba to Palafolls | 4,355.97 mi (7,010.26 km) |
| Lake Norman of Catawba to Palafrugell | 4,367.99 mi (7,029.60 km) |
| Lake Norman of Catawba to Palamos | 4,368.49 mi (7,030.40 km) |
