| Provo to Olympia (Washington) | 731.45 mi (1,177.16 km) |
| Provo to Olympia Heights (Florida) | 2,057.67 mi (3,311.49 km) |
| Provo to Omaha (Nebraska) | 818.03 mi (1,316.49 km) |
| Provo to On Top of the World Designated Place (Florida) | 1,825.90 mi (2,938.51 km) |
| Provo to Onalaska (Wisconsin) | 1,075.08 mi (1,730.17 km) |
| Provo to Oneida (New York) | 1,853.37 mi (2,982.72 km) |
| Provo to Oneonta (New York) | 1,888.68 mi (3,039.54 km) |
| Provo to Ontario (California) | 539.76 mi (868.66 km) |
| Provo to Ontario (Oregon) | 377.74 mi (607.91 km) |
| Provo to Opa-locka (Florida) | 2,054.55 mi (3,306.48 km) |
| Provo to Opelika (Alabama) | 1,544.12 mi (2,485.02 km) |
| Provo to Opelousas (Louisiana) | 1,286.18 mi (2,069.91 km) |
| Provo to Orange (California) | 560.18 mi (901.53 km) |
| Provo to Orange (Texas) | 1,224.69 mi (1,970.95 km) |
| Provo to Orange City (Florida) | 1,883.06 mi (3,030.49 km) |
