| Fairmount to Odessa (Texas) | 1,616.15 mi (2,600.94 km) |
| Fairmount to Ogden (Utah) | 1,820.64 mi (2,930.04 km) |
| Fairmount to Oildale (California) | 2,322.81 mi (3,738.21 km) |
| Fairmount to Ojus (Florida) | 1,200.93 mi (1,932.70 km) |
| Fairmount to Okemos (Michigan) | 413.93 mi (666.15 km) |
| Fairmount to Oklahoma City (Oklahoma) | 1,247.64 mi (2,007.88 km) |
| Fairmount to Okmulgee (Oklahoma) | 1,170.20 mi (1,883.26 km) |
| Fairmount to Olathe (Kansas) | 1,008.24 mi (1,622.61 km) |
| Fairmount to Old Jamestown (Missouri) | 786.79 mi (1,266.21 km) |
| Fairmount to Oldsmar (Florida) | 1,095.99 mi (1,763.82 km) |
| Fairmount to Olean (New York) | 129.39 mi (208.23 km) |
| Fairmount to Olive Branch (Mississippi) | 917.18 mi (1,476.06 km) |
| Fairmount to Olivehurst (California) | 2,347.49 mi (3,777.92 km) |
| Fairmount to Olney (Maryland) | 272.50 mi (438.54 km) |
| Fairmount to Olympia (Washington) | 2,260.05 mi (3,637.19 km) |
