Ohio to Kentucky

Distance from Dayton to Louisville/Jefferson County

Straight-line distance

136.2mi

Dayton, OH and Louisville/Jefferson County, KY are 136.2 miles (219.3 km) apart in a straight line. From Dayton, the shortest path starts out heading SW (215°).

kilometers
219.3
nautical miles
118.4
heading from Dayton
215° SW
heading from Louisville/Jefferson County
34° NE
DaytonLouisville/Jefferson County

Orange line: great-circle path · ring: midpoint · thin lines: county borders

How far Dayton is from Louisville/Jefferson County

The great-circle distance between the Census internal points of Dayton and Louisville/Jefferson County is 136.2 miles, 219.3 km or 118.4 nautical miles. That is the shortest path over the Earth's surface, computed with the haversine formula on a sphere with the mean Earth radius, 6,371.0 km. A course held on one compass bearing (a rhumb line) would be 136.3 miles, practically the same at this range.

Measurements

Miles
136.2
Kilometers
219.3
Nautical miles
118.4
Bearing from Dayton
215.3° SW
Bearing arriving at Louisville/Jefferson County
214.3°
Bearing from Louisville/Jefferson County
34.3° NE

Halfway between Dayton and Louisville/Jefferson County

The great-circle midpoint is at 38.977286, -84.931777 (38°58'38.23"N 84°55'54.40"W). The nearest incorporated place of 1,000 or more people is Rising Sun, IN, with 2,219 residents, 4.5 miles from the midpoint. To find towns near the midpoint of any two places, use the halfway tool.

Time zones and daylight

Dayton uses America/New_York and Louisville/Jefferson County uses America/Kentucky/Louisville; Louisville/Jefferson County is the same clock time all year. On June 21, Dayton gets 15 h 00 min of daylight and Louisville/Jefferson County 14 h 49 min; on December 21, 9 h 21 min and 9 h 31 min. Dayton is 1.62° farther north, so it has the longer summer days and the shorter winter ones.

Population compared

Louisville/Jefferson County has 4.7 times the population of Dayton. From July 2020 to July 2024, Dayton changed by -0.9% and Louisville/Jefferson County by +1.4%. The trip crosses from Ohio into Kentucky.

  1. 01Dayton, OH136,346 (-0.9%)
  2. 02Louisville/Jefferson County, KY640,796 (+1.4%)
July 1, 2024 population and change since July 2020, Census Vintage 2024.

Questions people ask

How far is Dayton from Louisville/Jefferson County?

136.2 miles, 219.3 km or 118.4 nautical miles along the great circle between the two Census internal points. Road distance is longer.

Which direction is Louisville/Jefferson County from Dayton?

SW. The great-circle path leaves Dayton on a bearing of 215.3° and arrives at Louisville/Jefferson County on 214.3°. The return trip starts on 34.3°.

What is halfway between Dayton and Louisville/Jefferson County?

The midpoint is at 38.977286, -84.931777. The nearest incorporated place of 1,000+ is Rising Sun, IN, 4.5 miles from it.

Is there a time difference between Dayton and Louisville/Jefferson County?

Dayton uses America/New_York and Louisville/Jefferson County uses America/Kentucky/Louisville; Louisville/Jefferson County is the same clock time all year.

Which is bigger, Dayton or Louisville/Jefferson County?

Louisville/Jefferson County, with 640,796 residents in July 2024 against 136,346 for Dayton, 4.7 times as many.

Sources and data as of

Data as of: Census 2024 Gazetteer internal points and Vintage 2024 estimates; time zones from Open-Meteo.

  1. 01Census 2024 Gazetteer, places
  2. 02Census Vintage 2024 subcounty population estimates
  3. 03SunCalc library (Vladimir Agafonkin), algorithms after Jean Meeus
  4. 04IANA time zone database (clock times and daylight saving rules)

How every number is computed: methodology. Spotted a wrong figure? Report an error.