| Phillipsburg to Oskaloosa (Iowa) | 909.91 mi (1,464.36 km) |
| Phillipsburg to Oswego (Illinois) | 686.79 mi (1,105.29 km) |
| Phillipsburg to Oswego (New York) | 202.47 mi (325.84 km) |
| Phillipsburg to Otsego (Minnesota) | 981.59 mi (1,579.72 km) |
| Phillipsburg to Ottawa (Illinois) | 711.98 mi (1,145.82 km) |
| Phillipsburg to Ottawa (Kansas) | 1,075.71 mi (1,731.19 km) |
| Phillipsburg to Ottumwa (Iowa) | 899.61 mi (1,447.78 km) |
| Phillipsburg to Overland (Missouri) | 818.00 mi (1,316.44 km) |
| Phillipsburg to Overland Park (Kansas) | 1,040.85 mi (1,675.08 km) |
| Phillipsburg to Overlea (Maryland) | 115.65 mi (186.12 km) |
| Phillipsburg to Oviedo (Florida) | 898.00 mi (1,445.19 km) |
| Phillipsburg to Owasso (Oklahoma) | 1,154.36 mi (1,857.75 km) |
| Phillipsburg to Owatonna (Minnesota) | 948.42 mi (1,526.34 km) |
| Phillipsburg to Owensboro (Kentucky) | 669.54 mi (1,077.52 km) |
| Phillipsburg to Owings Mills (Maryland) | 122.63 mi (197.36 km) |
