| Bolingbrook to Olivares | 4,204.07 mi (6,765.79 km) |
| Bolingbrook to Olivenza | 4,114.01 mi (6,620.86 km) |
| Bolingbrook to Olot | 4,410.82 mi (7,098.53 km) |
| Bolingbrook to Onate | 4,168.66 mi (6,708.81 km) |
| Bolingbrook to Onda | 4,376.01 mi (7,042.51 km) |
| Bolingbrook to Onteniente | 4,404.27 mi (7,087.99 km) |
| Bolingbrook to Orihuela | 4,417.30 mi (7,108.96 km) |
| Bolingbrook to Osuna | 4,259.57 mi (6,855.12 km) |
| Bolingbrook to Ourense | 3,953.02 mi (6,361.76 km) |
| Bolingbrook to Oviedo | 4,008.00 mi (6,450.25 km) |
| Bolingbrook to Paiporta | 4,389.53 mi (7,064.27 km) |
| Bolingbrook to Pajara | 4,159.52 mi (6,694.11 km) |
| Bolingbrook to Palafolls | 4,441.74 mi (7,148.29 km) |
| Bolingbrook to Palafrugell | 4,449.73 mi (7,161.15 km) |
| Bolingbrook to Palamos | 4,451.05 mi (7,163.28 km) |
