| Fitchburg to Olivares | 3,406.05 mi (5,481.51 km) |
| Fitchburg to Olivenza | 3,320.02 mi (5,343.06 km) |
| Fitchburg to Olot | 3,660.93 mi (5,891.70 km) |
| Fitchburg to Onate | 3,411.06 mi (5,489.58 km) |
| Fitchburg to Onda | 3,605.01 mi (5,801.70 km) |
| Fitchburg to Onteniente | 3,626.06 mi (5,835.58 km) |
| Fitchburg to Orihuela | 3,634.38 mi (5,848.97 km) |
| Fitchburg to Osuna | 3,462.94 mi (5,573.06 km) |
| Fitchburg to Ourense | 3,177.75 mi (5,114.09 km) |
| Fitchburg to Oviedo | 3,244.06 mi (5,220.81 km) |
| Fitchburg to Paiporta | 3,615.11 mi (5,817.96 km) |
| Fitchburg to Pajara | 3,325.56 mi (5,351.97 km) |
| Fitchburg to Palafolls | 3,689.29 mi (5,937.34 km) |
| Fitchburg to Palafrugell | 3,700.06 mi (5,954.67 km) |
| Fitchburg to Palamos | 3,700.82 mi (5,955.89 km) |
