| Campodarsego to Olympia Heights (Florida) | 5,075.42 mi (8,168.11 km) |
| Campodarsego to Omaha (Nebraska) | 4,979.57 mi (8,013.84 km) |
| Campodarsego to On Top of the World Designated Place (Florida) | 5,003.66 mi (8,052.61 km) |
| Campodarsego to Onalaska (Wisconsin) | 4,676.29 mi (7,525.76 km) |
| Campodarsego to Oneida (New York) | 4,105.42 mi (6,607.04 km) |
| Campodarsego to Oneonta (New York) | 4,105.86 mi (6,607.74 km) |
| Campodarsego to Ontario (California) | 6,101.09 mi (9,818.76 km) |
| Campodarsego to Ontario (Oregon) | 5,504.85 mi (8,859.20 km) |
| Campodarsego to Opa-locka (Florida) | 5,063.33 mi (8,148.65 km) |
| Campodarsego to Opelika (Alabama) | 4,970.59 mi (7,999.40 km) |
| Campodarsego to Opelousas (Louisiana) | 5,355.60 mi (8,619.01 km) |
| Campodarsego to Orange (California) | 6,121.45 mi (9,851.53 km) |
| Campodarsego to Orange (Texas) | 5,445.00 mi (8,762.88 km) |
| Campodarsego to Orange City (Florida) | 4,967.35 mi (7,994.17 km) |
| Campodarsego to Orangeburg (South Carolina) | 4,738.40 mi (7,625.72 km) |
