| Mendrisio to Oswego (Illinois) | 4,541.53 mi (7,308.88 km) |
| Mendrisio to Oswego (New York) | 3,991.09 mi (6,423.04 km) |
| Mendrisio to Otsego (Minnesota) | 4,576.69 mi (7,365.47 km) |
| Mendrisio to Ottawa (Illinois) | 4,575.48 mi (7,363.52 km) |
| Mendrisio to Ottawa (Kansas) | 4,954.62 mi (7,973.70 km) |
| Mendrisio to Ottumwa (Iowa) | 4,729.95 mi (7,612.12 km) |
| Mendrisio to Overland (Missouri) | 4,758.81 mi (7,658.56 km) |
| Mendrisio to Overland Park (Kansas) | 4,918.55 mi (7,915.64 km) |
| Mendrisio to Overlea (Maryland) | 4,157.27 mi (6,690.48 km) |
| Mendrisio to Oviedo (Florida) | 4,834.99 mi (7,781.16 km) |
| Mendrisio to Owasso (Oklahoma) | 5,089.71 mi (8,191.10 km) |
| Mendrisio to Owatonna (Minnesota) | 4,616.99 mi (7,430.33 km) |
| Mendrisio to Owensboro (Kentucky) | 4,671.14 mi (7,517.47 km) |
| Mendrisio to Owings Mills (Maryland) | 4,167.00 mi (6,706.14 km) |
| Mendrisio to Owosso (Michigan) | 4,320.00 mi (6,952.37 km) |
