| Federal Heights to Olympia Heights (Florida) | 1,725.07 mi (2,776.23 km) |
| Federal Heights to Omaha (Nebraska) | 480.00 mi (772.49 km) |
| Federal Heights to On Top of the World Designated Place (Florida) | 1,486.33 mi (2,392.01 km) |
| Federal Heights to Onalaska (Wisconsin) | 761.63 mi (1,225.72 km) |
| Federal Heights to Oneida (New York) | 1,527.79 mi (2,458.74 km) |
| Federal Heights to Oneonta (New York) | 1,559.96 mi (2,510.51 km) |
| Federal Heights to Ontario (California) | 802.19 mi (1,291.01 km) |
| Federal Heights to Ontario (Oregon) | 677.69 mi (1,090.64 km) |
| Federal Heights to Opa-locka (Florida) | 1,721.16 mi (2,769.93 km) |
| Federal Heights to Opelika (Alabama) | 1,198.53 mi (1,928.85 km) |
| Federal Heights to Opelousas (Louisiana) | 972.65 mi (1,565.33 km) |
| Federal Heights to Orange (California) | 821.54 mi (1,322.14 km) |
| Federal Heights to Orange (Texas) | 925.25 mi (1,489.05 km) |
| Federal Heights to Orange City (Florida) | 1,542.17 mi (2,481.88 km) |
| Federal Heights to Orangeburg (South Carolina) | 1,403.54 mi (2,258.79 km) |
