| Endicott to Olympia Heights (Florida) | 1,157.16 mi (1,862.27 km) |
| Endicott to Omaha (Nebraska) | 1,030.76 mi (1,658.85 km) |
| Endicott to On Top of the World Designated Place (Florida) | 962.63 mi (1,549.20 km) |
| Endicott to Onalaska (Wisconsin) | 774.11 mi (1,245.81 km) |
| Endicott to Oneida (New York) | 70.65 mi (113.71 km) |
| Endicott to Oneonta (New York) | 56.64 mi (91.15 km) |
| Endicott to Ontario (California) | 2,303.27 mi (3,706.76 km) |
| Endicott to Ontario (Oregon) | 2,048.29 mi (3,296.41 km) |
| Endicott to Opa-locka (Florida) | 1,144.25 mi (1,841.50 km) |
| Endicott to Opelika (Alabama) | 827.49 mi (1,331.71 km) |
| Endicott to Opelousas (Louisiana) | 1,194.05 mi (1,921.63 km) |
| Endicott to Orange (California) | 2,321.60 mi (3,736.25 km) |
| Endicott to Orange (Texas) | 1,283.92 mi (2,066.27 km) |
| Endicott to Orange City (Florida) | 955.25 mi (1,537.33 km) |
| Endicott to Orangeburg (South Carolina) | 649.54 mi (1,045.33 km) |
