| Hoffman Estates to Octeville | 3,961.44 mi (6,375.32 km) |
| Hoffman Estates to Oignies | 4,112.04 mi (6,617.68 km) |
| Hoffman Estates to Oissel | 4,078.20 mi (6,563.23 km) |
| Hoffman Estates to Olivet | 4,162.04 mi (6,698.15 km) |
| Hoffman Estates to Ollioules | 4,500.86 mi (7,243.44 km) |
| Hoffman Estates to Olonne-sur-Mer | 4,060.22 mi (6,534.29 km) |
| Hoffman Estates to Oloron-Sainte-Marie | 4,228.30 mi (6,804.79 km) |
| Hoffman Estates to Onet Village | 4,318.99 mi (6,950.74 km) |
| Hoffman Estates to Onnaing | 4,137.78 mi (6,659.11 km) |
| Hoffman Estates to Orange | 4,418.87 mi (7,111.48 km) |
| Hoffman Estates to Orchies | 4,121.33 mi (6,632.63 km) |
| Hoffman Estates to Orleans | 4,160.99 mi (6,696.47 km) |
| Hoffman Estates to Orly | 4,149.96 mi (6,678.72 km) |
| Hoffman Estates to Ormesson-sur-Marne | 4,154.14 mi (6,685.44 km) |
| Hoffman Estates to Orsay | 4,143.57 mi (6,668.43 km) |
