Idaho to Utah

Distance from Boise City to Salt Lake City

Straight-line distance

294.0mi

Boise City, ID and Salt Lake City, UT are 294.0 miles (473.1 km) apart in a straight line. From Boise City, the shortest path starts out heading SE (130°).

kilometers
473.1
nautical miles
255.5
heading from Boise City
130° SE
heading from Salt Lake City
313° NW
Boise CitySalt Lake City

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

How far Boise City is from Salt Lake City

The great-circle distance between the Census internal points of Boise City and Salt Lake City is 294.0 miles, 473.1 km or 255.5 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 294.0 miles, practically the same at this range.

Measurements

Miles
294.0
Kilometers
473.1
Nautical miles
255.5
Bearing from Boise City
130.1° SE
Bearing arriving at Salt Lake City
133.0°
Bearing from Salt Lake City
313.0° NW

Halfway between Boise City and Salt Lake City

The great-circle midpoint is at 42.208157, -114.032385 (42°12'29.36"N 114°01'56.59"W). The nearest incorporated place of 1,000 or more people is Burley, ID, with 12,211 residents, 25.8 miles from the midpoint. To find towns near the midpoint of any two places, use the halfway tool.

Time zones and daylight

Boise City uses America/Boise and Salt Lake City uses America/Denver; Salt Lake City is the same clock time all year. On June 21, Boise City gets 15 h 26 min of daylight and Salt Lake City 15 h 06 min; on December 21, 8 h 56 min and 9 h 15 min. Boise City is 2.82° farther north, so it has the longer summer days and the shorter winter ones.

Population compared

Boise City has 1.1 times the population of Salt Lake City. From July 2020 to July 2024, Boise City changed by +0.8% and Salt Lake City by +8.5%. The trip crosses from Idaho into Utah.

  1. 01Boise City, ID237,963 (+0.8%)
  2. 02Salt Lake City, UT217,783 (+8.5%)
July 1, 2024 population and change since July 2020, Census Vintage 2024.

Questions people ask

How far is Boise City from Salt Lake City?

294.0 miles, 473.1 km or 255.5 nautical miles along the great circle between the two Census internal points. Road distance is longer.

Which direction is Salt Lake City from Boise City?

SE. The great-circle path leaves Boise City on a bearing of 130.1° and arrives at Salt Lake City on 133.0°. The return trip starts on 313.0°.

What is halfway between Boise City and Salt Lake City?

The midpoint is at 42.208157, -114.032385. The nearest incorporated place of 1,000+ is Burley, ID, 25.8 miles from it.

Is there a time difference between Boise City and Salt Lake City?

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

Which is bigger, Boise City or Salt Lake City?

Boise City, with 237,963 residents in July 2024 against 217,783 for Salt Lake City, 1.1 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.