Distance Calculator

Distance from Boulder to Castle Rock

Distance between Boulder and Castle Rock is 80 kilometers (50 miles).
Driving distance from Boulder to Castle Rock is 92 kilometers (57 miles).

air 80 km
air 50 miles
car 92 km
car 57 miles

Distance Map Between Boulder and Castle Rock

Boulder, Denver, United StatesCastle Rock, Denver, United States = 50 miles = 80 km.

How far is it between Boulder and Castle Rock

Boulder is located in United States with (40.015,-105.2706) coordinates and Castle Rock is located in United States with (39.3722,-104.8561) coordinates. The calculated flying distance from Boulder to Castle Rock is equal to 50 miles which is equal to 80 km.

If you want to go by car, the driving distance between Boulder and Castle Rock is 92 km. If you ride your car with an average speed of 112 kilometers/hour (70 miles/h), travel time will be 00 hours 49 minutes. Please check the avg. speed travel time table on the right for various options.
Difference between fly and go by a car is 12 km.

City/PlaceLatitude and LongitudeGPS Coordinates
Boulder 40.015, -105.2706 40° 0´ 53.9640'' N
105° 16´ 13.9800'' W
Castle Rock 39.3722, -104.8561 39° 22´ 19.9560'' N
104° 51´ 21.9240'' W

Estimated Travel Time Between Boulder and Castle Rock

Average SpeedTravel Time
30 mph (48 km/h) 01 hours 55 minutes
40 mph (64 km/h) 01 hours 26 minutes
50 mph (80 km/h) 01 hours 09 minutes
60 mph (97 km/h) 00 hours 56 minutes
70 mph (112 km/h) 00 hours 49 minutes
75 mph (120 km/h) 00 hours 46 minutes
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