California

Distance from Antioch to Concord

Straight-line distance

11.2mi

Antioch, CA and Concord, CA are 11.2 miles (18.0 km) apart in a straight line. From Antioch, the shortest path starts out heading W (268°).

kilometers
18.0
nautical miles
9.7
heading from Antioch
268° W
heading from Concord
88° E
AntiochConcord

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

How far Antioch is from Concord

The great-circle distance between the Census internal points of Antioch and Concord is 11.2 miles, 18.0 km or 9.7 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 11.2 miles, practically the same at this range.

Measurements

Miles
11.2
Kilometers
18.0
Nautical miles
9.7
Bearing from Antioch
267.9° W
Bearing arriving at Concord
267.8°
Bearing from Concord
87.8° E

Halfway between Antioch and Concord

The great-circle midpoint is at 37.975295, -121.898854 (37°58'31.06"N 121°53'55.88"W). The nearest incorporated place of 1,000 or more people is Pittsburg, CA, with 77,131 residents, 2.9 miles from the midpoint. To find towns near the midpoint of any two places, use the halfway tool.

Time zones and daylight

Both use America/Los_Angeles, so there is no time difference. On June 21, Antioch gets 14 h 48 min of daylight and Concord 14 h 48 min; on December 21, 9 h 32 min and 9 h 32 min. The two sit at nearly the same latitude, so their day lengths match closely all year.

Population compared

Concord has 1.0 times the population of Antioch. From July 2020 to July 2024, Antioch changed by +2.7% and Concord by -1.0%. Both are in California.

  1. 01Antioch, CA118,453 (+2.7%)
  2. 02Concord, CA124,016 (-1.0%)
July 1, 2024 population and change since July 2020, Census Vintage 2024.

Questions people ask

How far is Antioch from Concord?

11.2 miles, 18.0 km or 9.7 nautical miles along the great circle between the two Census internal points. Road distance is longer.

Which direction is Concord from Antioch?

W. The great-circle path leaves Antioch on a bearing of 267.9° and arrives at Concord on 267.8°. The return trip starts on 87.8°.

What is halfway between Antioch and Concord?

The midpoint is at 37.975295, -121.898854. The nearest incorporated place of 1,000+ is Pittsburg, CA, 2.9 miles from it.

Is there a time difference between Antioch and Concord?

Both use America/Los_Angeles, so there is no time difference.

Which is bigger, Antioch or Concord?

Concord, with 124,016 residents in July 2024 against 118,453 for Antioch, 1.0 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.