| Nicholasville to Oakley (California) | 2,009.41 mi (3,233.83 km) |
| Nicholasville to Oakton (Virginia) | 399.34 mi (642.67 km) |
| Nicholasville to Oakville (Missouri) | 314.82 mi (506.65 km) |
| Nicholasville to Oatfield (Oregon) | 2,010.47 mi (3,235.54 km) |
| Nicholasville to Ocala (Florida) | 617.78 mi (994.22 km) |
| Nicholasville to Ocean Acres (New Jersey) | 568.00 mi (914.11 km) |
| Nicholasville to Ocean City (New Jersey) | 546.29 mi (879.16 km) |
| Nicholasville to Ocean Pines (Maryland) | 512.73 mi (825.16 km) |
| Nicholasville to Ocean Pointe (Hawaii) | 4,447.73 mi (7,157.93 km) |
| Nicholasville to Ocean Springs (Mississippi) | 570.33 mi (917.85 km) |
| Nicholasville to Oceanside (California) | 1,858.62 mi (2,991.15 km) |
| Nicholasville to Oceanside (New York) | 614.17 mi (988.41 km) |
| Nicholasville to Ocoee (Florida) | 666.67 mi (1,072.90 km) |
| Nicholasville to Oconomowoc (Wisconsin) | 414.76 mi (667.50 km) |
| Nicholasville to Odenton (Maryland) | 433.37 mi (697.44 km) |
