| Billings to Olivares | 4,943.24 mi (7,955.37 km) |
| Billings to Olivenza | 4,845.23 mi (7,797.65 km) |
| Billings to Olot | 5,029.66 mi (8,094.46 km) |
| Billings to Onate | 4,813.45 mi (7,746.50 km) |
| Billings to Onda | 5,042.61 mi (8,115.30 km) |
| Billings to Onteniente | 5,086.81 mi (8,186.43 km) |
| Billings to Orihuela | 5,110.87 mi (8,225.15 km) |
| Billings to Osuna | 4,993.35 mi (8,036.01 km) |
| Billings to Ourense | 4,644.72 mi (7,474.96 km) |
| Billings to Oviedo | 4,672.71 mi (7,520.00 km) |
| Billings to Paiporta | 5,063.60 mi (8,149.07 km) |
| Billings to Pajara | 5,042.35 mi (8,114.88 km) |
| Billings to Palafolls | 5,064.80 mi (8,151.01 km) |
| Billings to Palafrugell | 5,066.58 mi (8,153.87 km) |
| Billings to Palamos | 5,069.03 mi (8,157.82 km) |
