How far is Westminster, CO from Castle Rock, CO?
The driving distance from Westminster, CO to Castle Rock, CO is about 40 miles (64.3 km), with a travel time of about 00h 45m by car.
- The straight-line flight distance is about 33.5 miles (53.9 km).
- For a round trip, plan for roughly 01h 30m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM MDT.
Reverse, save, or send this route
This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 00h 45m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
City in Colorado
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny then Slight Chance Rain Showers
Sunny then Slight Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Westminster and Castle Rock.
Turn-by-Turn Driving Directions
Step-by-step road directions between Westminster and Castle Rock.
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1
Start on Newton Street
35 m · 11 sec · Newton Street
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2
Turn left onto West 77th Avenue
873 ft · 40 sec · West 77th Avenue
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3
At the end of the road, turn right onto Lowell Boulevard
1 km · 1 min · Lowell Boulevard
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4
Turn left onto West 72nd Avenue
2630 ft · 51 sec · West 72nd Avenue
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5
Turn right onto Federal Boulevard
4.6 mi · 10 min · Federal Boulevard
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6
Turn left onto North Speer Boulevard
3117 ft · 1 min · North Speer Boulevard
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7
Take the ramp slight right toward I 25 South: Colorado Springs
1454 ft · 37 sec
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8
Merge slight left onto North Valley Highway
29.1 mi · 34 min · North Valley Highway
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9
Take the exit slight right toward Wilcox Street, Wolfensberger Road
1213 ft · 32 sec
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10
Turn left onto East Wolfensberger Road
132 m · 21 sec · East Wolfensberger Road
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11
Continue on North Wilcox Street
2093 ft · 1 min · North Wilcox Street
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12
Turn left onto 5th Street
979 ft · 37 sec · 5th Street
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13
Turn right onto North Cantril Street
837 ft · 29 sec · North Cantril Street
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14
Arrive at your destination
0 m · 1 sec · North Cantril Street
Car Route Details
A richer read on the saved driving route between Westminster and Castle Rock.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
North Valley Highway
Merge slight left onto North Valley Highway
29.1 mi · 00h 34m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Mostly Sunny then Slight Chance Rain Showers leaving Westminster and Sunny then Slight Chance Rain Showers near Castle Rock.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Westminster to Castle Rock?
The road trip is about 40 miles (64.3 km) and usually takes 00h 45m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
Greenwood Village is a useful midpoint, sitting about 18.5 miles from Westminster and 21.4 miles from Castle Rock.
How much longer is the road route than the straight-line distance?
The direct path is about 33.5 miles (53.9 km), while the road route adds roughly 6.5 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 7:00 AM to 7:00 PM MDT. If you want a more comfortable same-day return, try to leave by 7:00 PM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $5.21 one way or $10.43 round trip. Estimated CO2 is about 12.5 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny then Slight Chance Rain Showers around Westminster and Sunny then Slight Chance Rain Showers near Castle Rock.
Stop Ideas Near Greenwood Village
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Fairplay Park
Denver City Council
Town Hall Arts Center
City of Littleton
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Greenwood Village.
Denver (Bus Station), Colorado
Union Station
Pine Junction, CO
Boulder, Colorado
Flight Path Map
This map shows the direct air route between Westminster and Castle Rock. Straight-line distance: 33.5 mi (53.92 km).
#1 Westminster
The most populous city in Adams County, Colorado.
| Population | 115,046 |
| Coordinates | 39.8366500, -105.0372000 |
| Altitude | 1641 |
| Country | United States |
#2 Castle Rock
The most populous city in Douglas County, Colorado.
| Population | 70,567 |
| Coordinates | 39.3722100, -104.8560900 |
| Altitude | 1897 |
| Country | United States |
End: Cantril Street (-104.856315, 39.3722)
Estimated Travel Time
Distance: 64 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 19m |
| 40 mph (64.37 km/h) | 00h 59m |
| 50 mph (80.47 km/h) | 00h 47m |
| 60 mph (96.56 km/h) | 00h 39m |
| 70 mph (112.65 km/h) | 00h 34m |
| 80 mph (129 km/h) | 00h 29m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.70 | $5.21 | $10.43 |
| Mid-grade | $4.08 | $5.76 | $11.52 |
| Premium | $4.39 | $6.19 | $12.38 |
| Diesel | $4.74 | $6.68 | $13.36 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in Colorado · Apr 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.