| Pharr to Oskaloosa (Iowa) | 1,091.88 mi (1,757.22 km) |
| Pharr to Oswego (Illinois) | 1,209.70 mi (1,946.82 km) |
| Pharr to Oswego (New York) | 1,704.62 mi (2,743.32 km) |
| Pharr to Otsego (Minnesota) | 1,343.60 mi (2,162.32 km) |
| Pharr to Ottawa (Illinois) | 1,177.38 mi (1,894.81 km) |
| Pharr to Ottawa (Kansas) | 875.57 mi (1,409.10 km) |
| Pharr to Ottumwa (Iowa) | 1,077.85 mi (1,734.64 km) |
| Pharr to Overland (Missouri) | 977.44 mi (1,573.04 km) |
| Pharr to Overland Park (Kansas) | 901.94 mi (1,451.53 km) |
| Pharr to Overlea (Maryland) | 1,547.72 mi (2,490.81 km) |
| Pharr to Oviedo (Florida) | 1,056.02 mi (1,699.51 km) |
| Pharr to Owasso (Oklahoma) | 712.86 mi (1,147.24 km) |
| Pharr to Owatonna (Minnesota) | 1,269.01 mi (2,042.28 km) |
| Pharr to Owensboro (Kentucky) | 1,029.07 mi (1,656.13 km) |
| Pharr to Owings Mills (Maryland) | 1,536.66 mi (2,473.01 km) |
