Colorado

Distance from Boulder to Fort Collins

Straight-line distance

37.5mi

Boulder, CO and Fort Collins, CO are 37.5 miles (60.4 km) apart in a straight line. From Boulder, the shortest path starts out heading NNE (15°).

kilometers
60.4
nautical miles
32.6
heading from Boulder
15° NNE
heading from Fort Collins
195° SSW
BoulderFort Collins

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

How far Boulder is from Fort Collins

The great-circle distance between the Census internal points of Boulder and Fort Collins is 37.5 miles, 60.4 km or 32.6 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 37.5 miles, practically the same at this range.

Measurements

Miles
37.5
Kilometers
60.4
Nautical miles
32.6
Bearing from Boulder
15.1° NNE
Bearing arriving at Fort Collins
15.3°
Bearing from Fort Collins
195.3° SSW

Halfway between Boulder and Fort Collins

The great-circle midpoint is at 40.286337, -105.158411 (40°17'10.81"N 105°09'30.28"W). The nearest incorporated place of 1,000 or more people is Lyons, CO, with 2,155 residents, 7.3 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/Denver, so there is no time difference. On June 21, Boulder gets 15 h 01 min of daylight and Fort Collins 15 h 05 min; on December 21, 9 h 20 min and 9 h 16 min. Fort Collins is 0.52° farther north, so it has the longer summer days and the shorter winter ones.

Population compared

Fort Collins has 1.6 times the population of Boulder. From July 2020 to July 2024, Boulder changed by -1.5% and Fort Collins by +0.5%. Both are in Colorado.

  1. 01Boulder, CO106,803 (-1.5%)
  2. 02Fort Collins, CO170,924 (+0.5%)
July 1, 2024 population and change since July 2020, Census Vintage 2024.

Questions people ask

How far is Boulder from Fort Collins?

37.5 miles, 60.4 km or 32.6 nautical miles along the great circle between the two Census internal points. Road distance is longer.

Which direction is Fort Collins from Boulder?

NNE. The great-circle path leaves Boulder on a bearing of 15.1° and arrives at Fort Collins on 15.3°. The return trip starts on 195.3°.

What is halfway between Boulder and Fort Collins?

The midpoint is at 40.286337, -105.158411. The nearest incorporated place of 1,000+ is Lyons, CO, 7.3 miles from it.

Is there a time difference between Boulder and Fort Collins?

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

Which is bigger, Boulder or Fort Collins?

Fort Collins, with 170,924 residents in July 2024 against 106,803 for Boulder, 1.6 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.