Idaho to Washington

Distance from Nampa to Spokane

Straight-line distance

285.1mi

Nampa, ID and Spokane, WA are 285.1 miles (458.9 km) apart in a straight line. From Nampa, the shortest path starts out heading N (352°).

kilometers
458.9
nautical miles
247.8
heading from Nampa
352° N
heading from Spokane
171° S
NampaSpokane

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

How far Nampa is from Spokane

The great-circle distance between the Census internal points of Nampa and Spokane is 285.1 miles, 458.9 km or 247.8 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 285.1 miles, practically the same at this range.

Measurements

Miles
285.1
Kilometers
458.9
Nautical miles
247.8
Bearing from Nampa
351.8° N
Bearing arriving at Spokane
351.2°
Bearing from Spokane
171.2° S

Halfway between Nampa and Spokane

The great-circle midpoint is at 45.626775, -116.982248 (45°37'36.39"N 116°58'56.09"W). The nearest incorporated place of 1,000 or more people is Enterprise, OR, with 2,083 residents, 19.9 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 Spokane uses America/Los_Angeles; Spokane is 1 hour behind all year. On June 21, Nampa gets 15 h 26 min of daylight and Spokane 16 h 00 min; on December 21, 8 h 56 min and 8 h 25 min. Spokane is 4.08° farther north, so it has the longer summer days and the shorter winter ones.

Population compared

Spokane has 2.0 times the population of Nampa. From July 2020 to July 2024, Nampa changed by +15.7% and Spokane by +0.6%. The trip crosses from Idaho into Washington.

  1. 01Nampa, ID117,350 (+15.7%)
  2. 02Spokane, WA230,609 (+0.6%)
July 1, 2024 population and change since July 2020, Census Vintage 2024.

Questions people ask

How far is Nampa from Spokane?

285.1 miles, 458.9 km or 247.8 nautical miles along the great circle between the two Census internal points. Road distance is longer.

Which direction is Spokane from Nampa?

N. The great-circle path leaves Nampa on a bearing of 351.8° and arrives at Spokane on 351.2°. The return trip starts on 171.2°.

What is halfway between Nampa and Spokane?

The midpoint is at 45.626775, -116.982248. The nearest incorporated place of 1,000+ is Enterprise, OR, 19.9 miles from it.

Is there a time difference between Nampa and Spokane?

Nampa uses America/Boise and Spokane uses America/Los_Angeles; Spokane is 1 hour behind all year.

Which is bigger, Nampa or Spokane?

Spokane, with 230,609 residents in July 2024 against 117,350 for Nampa, 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.