| Troy to Olivares | 3,947.33 mi (6,352.62 km) |
| Troy to Olivenza | 3,857.99 mi (6,208.84 km) |
| Troy to Olot | 4,164.37 mi (6,701.91 km) |
| Troy to Onate | 3,920.24 mi (6,309.01 km) |
| Troy to Onda | 4,124.86 mi (6,638.32 km) |
| Troy to Onteniente | 4,151.61 mi (6,681.36 km) |
| Troy to Orihuela | 4,163.66 mi (6,700.77 km) |
| Troy to Osuna | 4,003.12 mi (6,442.40 km) |
| Troy to Ourense | 3,700.62 mi (5,955.57 km) |
| Troy to Oviedo | 3,758.04 mi (6,047.98 km) |
| Troy to Paiporta | 4,137.66 mi (6,658.92 km) |
| Troy to Pajara | 3,898.50 mi (6,274.02 km) |
| Troy to Palafolls | 4,194.74 mi (6,750.78 km) |
| Troy to Palafrugell | 4,203.37 mi (6,764.67 km) |
| Troy to Palamos | 4,204.56 mi (6,766.59 km) |
