Montana to Idaho

Distance from Billings to Boise City

Straight-line distance

406.1mi

Billings, MT and Boise City, ID are 406.1 miles (653.5 km) apart in a straight line. From Billings, the shortest path starts out heading WSW (251°).

kilometers
653.5
nautical miles
352.9
heading from Billings
251° WSW
heading from Boise City
65° ENE
BillingsBoise City

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

How far Billings is from Boise City

The great-circle distance between the Census internal points of Billings and Boise City is 406.1 miles, 653.5 km or 352.9 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 406.2 miles, 239 meters longer.

Measurements

Miles
406.1
Kilometers
653.5
Nautical miles
352.9
Bearing from Billings
250.9° WSW
Bearing arriving at Boise City
245.5°
Bearing from Boise City
65.5° ENE

Halfway between Billings and Boise City

The great-circle midpoint is at 44.758217, -112.463823 (44°45'29.58"N 112°27'49.76"W). The nearest incorporated place of 1,000 or more people is Dillon, MT, with 4,242 residents, 32.8 miles from the midpoint. To find towns near the midpoint of any two places, use the halfway tool.

Time zones and daylight

Billings uses America/Denver and Boise City uses America/Boise; Boise City is the same clock time all year. On June 21, Billings gets 15 h 44 min of daylight and Boise City 15 h 26 min; on December 21, 8 h 40 min and 8 h 56 min. Billings is 2.19° farther north, so it has the longer summer days and the shorter winter ones.

Population compared

Boise City has 2.0 times the population of Billings. From July 2020 to July 2024, Billings changed by +3.6% and Boise City by +0.8%. The trip crosses from Montana into Idaho.

  1. 01Billings, MT121,483 (+3.6%)
  2. 02Boise City, ID237,963 (+0.8%)
July 1, 2024 population and change since July 2020, Census Vintage 2024.

Questions people ask

How far is Billings from Boise City?

406.1 miles, 653.5 km or 352.9 nautical miles along the great circle between the two Census internal points. Road distance is longer.

Which direction is Boise City from Billings?

WSW. The great-circle path leaves Billings on a bearing of 250.9° and arrives at Boise City on 245.5°. The return trip starts on 65.5°.

What is halfway between Billings and Boise City?

The midpoint is at 44.758217, -112.463823. The nearest incorporated place of 1,000+ is Dillon, MT, 32.8 miles from it.

Is there a time difference between Billings and Boise City?

Billings uses America/Denver and Boise City uses America/Boise; Boise City is the same clock time all year.

Which is bigger, Billings or Boise City?

Boise City, with 237,963 residents in July 2024 against 121,483 for Billings, 2.0 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.