| Cham to Oswego (Illinois) | 4,543.56 mi (7,312.15 km) |
| Cham to Oswego (New York) | 4,017.40 mi (6,465.38 km) |
| Cham to Otsego (Minnesota) | 4,549.96 mi (7,322.45 km) |
| Cham to Ottawa (Illinois) | 4,577.45 mi (7,366.69 km) |
| Cham to Ottawa (Kansas) | 4,948.24 mi (7,963.43 km) |
| Cham to Ottumwa (Iowa) | 4,722.98 mi (7,600.90 km) |
| Cham to Overland (Missouri) | 4,766.69 mi (7,671.24 km) |
| Cham to Overland Park (Kansas) | 4,912.86 mi (7,906.48 km) |
| Cham to Overlea (Maryland) | 4,202.14 mi (6,762.69 km) |
| Cham to Oviedo (Florida) | 4,908.95 mi (7,900.20 km) |
| Cham to Owasso (Oklahoma) | 5,089.84 mi (8,191.31 km) |
| Cham to Owatonna (Minnesota) | 4,595.90 mi (7,396.39 km) |
| Cham to Owensboro (Kentucky) | 4,692.26 mi (7,551.46 km) |
| Cham to Owings Mills (Maryland) | 4,210.90 mi (6,776.79 km) |
| Cham to Owosso (Michigan) | 4,328.04 mi (6,965.30 km) |
