| Hoffman Estates to Olivares | 4,194.94 mi (6,751.10 km) |
| Hoffman Estates to Olivenza | 4,104.55 mi (6,605.63 km) |
| Hoffman Estates to Olot | 4,398.17 mi (7,078.17 km) |
| Hoffman Estates to Onate | 4,156.56 mi (6,689.34 km) |
| Hoffman Estates to Onda | 4,364.70 mi (7,024.31 km) |
| Hoffman Estates to Onteniente | 4,393.46 mi (7,070.60 km) |
| Hoffman Estates to Orihuela | 4,406.84 mi (7,092.13 km) |
| Hoffman Estates to Osuna | 4,250.30 mi (6,840.20 km) |
| Hoffman Estates to Ourense | 3,942.15 mi (6,344.28 km) |
| Hoffman Estates to Oviedo | 3,996.36 mi (6,431.51 km) |
| Hoffman Estates to Paiporta | 4,378.46 mi (7,046.45 km) |
| Hoffman Estates to Pajara | 4,156.05 mi (6,688.52 km) |
| Hoffman Estates to Palafolls | 4,429.23 mi (7,128.15 km) |
| Hoffman Estates to Palafrugell | 4,437.05 mi (7,140.74 km) |
| Hoffman Estates to Palamos | 4,438.40 mi (7,142.92 km) |
