Idaho to Utah
Distance from Nampa to Salt Lake City
Straight-line distance
306.3mi
Nampa, ID and Salt Lake City, UT are 306.3 miles (493.0 km) apart in a straight line. From Nampa, the shortest path starts out heading SE (128°).
- kilometers
- 493.0
- nautical miles
- 266.2
- heading from Nampa
- 128° SE
- heading from Salt Lake City
- 311° NW
Orange line: great-circle path · ring: midpoint · thin lines: county borders
How far Nampa is from Salt Lake City
The great-circle distance between the Census internal points of Nampa and Salt Lake City is 306.3 miles, 493.0 km or 266.2 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 306.4 miles, 59 meters longer.
Measurements
- Miles
- 306.3
- Kilometers
- 493.0
- Nautical miles
- 266.2
- Bearing from Nampa
- 127.7° SE
- Bearing arriving at Salt Lake City
- 130.8°
- Bearing from Salt Lake City
- 310.8° NW
Halfway between Nampa and Salt Lake City
The great-circle midpoint is at 42.204236, -114.195486 (42°12'15.25"N 114°11'43.75"W). The nearest incorporated place of 1,000 or more people is Hansen, ID, with 1,118 residents, 23.2 miles from the midpoint. To find towns near the midpoint of any two places, use the halfway tool.
Time zones and daylight
Nampa uses America/Boise and Salt Lake City uses America/Denver; Salt Lake City is the same clock time all year. On June 21, Nampa 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. Nampa is 2.81° farther north, so it has the longer summer days and the shorter winter ones.
Population compared
Salt Lake City has 1.9 times the population of Nampa. From July 2020 to July 2024, Nampa changed by +15.7% and Salt Lake City by +8.5%. The trip crosses from Idaho into Utah.
- 01Nampa, ID117,350 (+15.7%)
- 02Salt Lake City, UT217,783 (+8.5%)
Questions people ask
How far is Nampa from Salt Lake City?
306.3 miles, 493.0 km or 266.2 nautical miles along the great circle between the two Census internal points. Road distance is longer.
Which direction is Salt Lake City from Nampa?
SE. The great-circle path leaves Nampa on a bearing of 127.7° and arrives at Salt Lake City on 130.8°. The return trip starts on 310.8°.
What is halfway between Nampa and Salt Lake City?
The midpoint is at 42.204236, -114.195486. The nearest incorporated place of 1,000+ is Hansen, ID, 23.2 miles from it.
Is there a time difference between Nampa and Salt Lake City?
Nampa uses America/Boise and Salt Lake City uses America/Denver; Salt Lake City is the same clock time all year.
Which is bigger, Nampa or Salt Lake City?
Salt Lake City, with 217,783 residents in July 2024 against 117,350 for Nampa, 1.9 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.
- 01Census 2024 Gazetteer, places
- 02Census Vintage 2024 subcounty population estimates
- 03SunCalc library (Vladimir Agafonkin), algorithms after Jean Meeus
- 04IANA time zone database (clock times and daylight saving rules)
How every number is computed: methodology. Spotted a wrong figure? Report an error.