How far is Castlewood from Boulder?

Distance by Flight

Shortest distance between Castlewood and Boulder is 35.62 miles (57.32 km).

Flight distance from Castlewood, CO to Boulder, CO is 35.62 miles. Estimated flight time is 00 hours 05 minutes.

Driving distance

The driving distance from Castlewood, Colorado to Boulder, Colorado is: 42.97 miles (69.15 km) by car.

Driving from Castlewood to Boulder will take approximately 00 hours 54 minutes.

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#1 Castlewood

City in Hamlin County, South Dakota, United States

Population 25271
GPS Coordinates 39°35'5"N 104°54'4"W
Latitude 39.5847100
Longitude -104.9010900
Altitude 1746
Country United States
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#2 Boulder

City in Colorado, United States of America

Population 107645
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 Castlewood and Boulder

The distance between Castlewood and Boulder is 69 km if you choose to drive by road. You can go 00 hours 46 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 Castlewood and Boulder. The current time is 04:30:29.

Average Speed Travel Time
30 mph (48.3 km/h) 01 hours 25 minutes
40 mph (64.37 km/h) 01 hours 04 minutes
50 mph (80.47 km/h) 00 hours 51 minutes
60 mph (96.56 km/h) 00 hours 42 minutes
70 mph (112.65 km/h) 00 hours 36 minutes
75 mph (120.7 km/h) 00 hours 34 minutes
80 mph (128.75 km/h) 00 hours 32 minutes

Gas Consumption

A car with a fuel efficiency of 8.3 l/100 km will need 5.74 liters (1.52 gallon) of gas to cover the route between Castlewood and Boulder.
The estimated cost of gas to go from Castlewood to Boulder is $6.22 (diesel $7.35).

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 $4.102 (Diesel $4.849) /gallon. Last changed prices on September 28, 2022.

How did we calculate the distance?

The place names are translated into coordinates to approximate the distance between Castlewood 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 Castlewood 25.16 miles (40 km)

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Driving distance from Aurora, CO to Castlewood 14.14 miles (23 km)

Driving distance from Broomfield, CO to Castlewood 31.47 miles (51 km)

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Driving distance from Castle Rock, CO to Castlewood 16.62 miles (27 km)

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Driving distance from Centennial, CO to Castlewood 1.65 miles (3 km)

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Driving distance from Commerce City, CO to Castlewood 24.59 miles (40 km)

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Driving distance from Denver, CO to Castlewood 14.19 miles (23 km)

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Driving distance from Grand Junction, CO to Castlewood 257.17 miles (414 km)

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Driving distance from Lakewood, CO to Castlewood 19.29 miles (31 km)

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Driving distance from Pueblo, CO to Castlewood 100.23 miles (161 km)

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Driving distance from Thornton, CO to Castlewood 25.52 miles (41 km)

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