| Wheaton to Oskaloosa (Iowa) | 237.44 mi (382.12 km) |
| Wheaton to Oswego (Illinois) | 16.77 mi (26.99 km) |
| Wheaton to Oswego (New York) | 599.56 mi (964.89 km) |
| Wheaton to Otsego (Minnesota) | 362.69 mi (583.70 km) |
| Wheaton to Ottawa (Illinois) | 50.70 mi (81.60 km) |
| Wheaton to Ottawa (Kansas) | 439.19 mi (706.81 km) |
| Wheaton to Ottumwa (Iowa) | 230.59 mi (371.09 km) |
| Wheaton to Overland (Missouri) | 248.68 mi (400.21 km) |
| Wheaton to Overland Park (Kansas) | 402.32 mi (647.47 km) |
| Wheaton to Overlea (Maryland) | 631.32 mi (1,016.00 km) |
| Wheaton to Oviedo (Florida) | 991.11 mi (1,595.04 km) |
| Wheaton to Owasso (Oklahoma) | 564.90 mi (909.12 km) |
| Wheaton to Owatonna (Minnesota) | 301.43 mi (485.11 km) |
| Wheaton to Owensboro (Kentucky) | 288.03 mi (463.53 km) |
| Wheaton to Owings Mills (Maryland) | 616.44 mi (992.07 km) |
