How far is Castle Rock from Longmont?

Distance by Flight

Shortest distance between Castle Rock and Longmont is 56.46 miles (90.86 km).

Flight distance from Houston to Atlanta is 56.46 miles. Estimated flight time is 00 hours 09 minutes.

It takes 00 hours 08 minutes to travel from Castle Rock to Longmont with an airplane (average speed of 550 miles).

Driving distance

The driving distance from Castle Rock, Colorado to Longmont, Colorado is: 78.8 miles (126.81 km) by car.

Driving from Castle Rock to Longmont will take approximately 01 hours 14 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 Longmont

City in Colorado, USA

Population 97261
GPS Coordinates 40°10'2"N 105°6'7"W
Latitude 40.1672100
Longitude -105.1019300
Altitude 1519
Country United States

Estimated Travel Time Between Castle Rock and Longmont

The distance between Castle Rock and Longmont is 127 km if you choose to drive by road. You can go 01 hours 24 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 Longmont. The current time is 08:32:15.

Average Speed Travel Time
30 mph (48.3 km/h) 02 hours 37 minutes
40 mph (64.37 km/h) 01 hours 58 minutes
50 mph (80.47 km/h) 01 hours 34 minutes
60 mph (96.56 km/h) 01 hours 18 minutes
70 mph (112.65 km/h) 01 hours 07 minutes
75 mph (120.7 km/h) 01 hours 03 minutes
80 mph (128.75 km/h) 00 hours 58 minutes

Gas Consumption

A car with a fuel efficiency of 8.3 l/100 km will need 10.53 liters (2.78 gallon) of gas to cover the route between Castle Rock and Longmont.
The estimated cost of gas to go from Castle Rock to Longmont is $8.51 (diesel $9.14).

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 $3.06 (Diesel $3.287) /gallon. Last changed prices on June 23, 2021.

How did we calculate the distance?

The place names are translated into coordinates to approximate the distance between Castle Rock and Longmont (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 Boulder, CO to Castle Rock 57.34 miles (92 km)

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