| Trenton to Olympia (Washington) | 2,413.24 mi (3,883.73 km) |
| Trenton to Olympia Heights (Florida) | 1,052.04 mi (1,693.10 km) |
| Trenton to Omaha (Nebraska) | 1,113.94 mi (1,792.72 km) |
| Trenton to On Top of the World Designated Place (Florida) | 878.27 mi (1,413.44 km) |
| Trenton to Onalaska (Wisconsin) | 879.02 mi (1,414.65 km) |
| Trenton to Oneida (New York) | 202.51 mi (325.91 km) |
| Trenton to Oneonta (New York) | 154.97 mi (249.40 km) |
| Trenton to Ontario (California) | 2,374.85 mi (3,821.95 km) |
| Trenton to Ontario (Oregon) | 2,155.25 mi (3,468.54 km) |
| Trenton to Opa-locka (Florida) | 1,038.93 mi (1,671.99 km) |
| Trenton to Opelika (Alabama) | 786.96 mi (1,266.49 km) |
| Trenton to Opelousas (Louisiana) | 1,180.14 mi (1,899.25 km) |
| Trenton to Orange (California) | 2,392.63 mi (3,850.56 km) |
| Trenton to Orange (Texas) | 1,275.62 mi (2,052.92 km) |
| Trenton to Orange City (Florida) | 863.13 mi (1,389.07 km) |
