How far is Castle Rock from Boulder?

Distance by Flight

Shortest distance between Castle Rock and Boulder is 49.58 miles (79.79 km).

Flight distance from Houston to Atlanta is 49.58 miles. Estimated flight time is 00 hours 06 minutes.

Driving distance

The driving distance from Castle Rock, Colorado to Boulder, Colorado is: 57.34 miles (92.28 km) by car.

Driving from Castle Rock to Boulder will take approximately 01 hours 00 minutes.

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#1 Castle Rock

County seat of Douglas County, Colorado, United States

Population 68484
GPS Coordinates 39°22'20"N 104°51'22"W
Latitude 39.3722100
Longitude -104.8560900
Altitude 1897
Country United States
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#2 Boulder

City in Colorado, United States of America

Population 105673
GPS Coordinates 40°0'54"N 105°16'14"W
Latitude 40.0149900
Longitude -105.2705500
Altitude 1624
Country United States

Estimated Travel Time Between Castle Rock and Boulder

The distance between Castle Rock and Boulder is 92 km if you choose to drive by road. You can go 01 hours 01 minutes if you drive your car at an average speed of 90 kilometers / hour. For different choices, please review the avg. speed travel time table on the below.

There is no time difference between Castle Rock and Boulder. The current time is 10:33:52.

Average Speed Travel Time
30 mph (48.3 km/h) 01 hours 54 minutes
40 mph (64.37 km/h) 01 hours 26 minutes
50 mph (80.47 km/h) 01 hours 08 minutes
60 mph (96.56 km/h) 00 hours 57 minutes
70 mph (112.65 km/h) 00 hours 49 minutes
75 mph (120.7 km/h) 00 hours 45 minutes
80 mph (128.75 km/h) 00 hours 42 minutes

Gas Consumption

A car with a fuel efficiency of 8.3 l/100 km will need 7.66 liters (2.02 gallon) of gas to cover the route between Castle Rock and Boulder.
The estimated cost of gas to go from Castle Rock to Boulder is $6.21 (diesel $6.65).

Take a look at our Gas Cost Calculator feature. It will figure out how much it will cost to drive this particular distance.

The average gas price per gallon of daily gas for calculations is $3.069 (Diesel $3.286) /gallon. Last changed prices on June 15, 2021.

How did we calculate the distance?

The place names are translated into coordinates to approximate the distance between Castle Rock and Boulder (latitude and longitude). Cities, states, and countries each have their own regional center. The Haversine formula is used to measure the radius.

Distance to Other Cities

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Driving distance from Arvada, CO to Castle Rock 39.54 miles (64 km)

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Driving distance from Aurora, CO to Castle Rock 28.51 miles (46 km)

Driving distance from Broomfield, CO to Castle Rock 45.84 miles (74 km)

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Driving distance from Centennial, CO to Castle Rock 15.6 miles (25 km)

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Driving distance from Denver, CO to Castle Rock 29.42 miles (47 km)

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Driving distance from Grand Junction, CO to Castle Rock 270.94 miles (436 km)

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Driving distance from Lakewood, CO to Castle Rock 33.67 miles (54 km)

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Driving distance from Pueblo, CO to Castle Rock 85.27 miles (137 km)

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Driving distance from Thornton, CO to Castle Rock 39.89 miles (64 km)

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Driving distance from Westminster, CO to Castle Rock 39.74 miles (64 km)

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Driving distance from Fort Collins, CO to Castle Rock 106.08 miles (171 km)

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