How far is Castle Rock, CO from Windsor, CO?
The driving distance from Castle Rock, CO to Windsor, CO is about 86.1 miles (138.5 km), with a travel time of about 01h 42m by car.
- The straight-line flight distance is about 76.4 miles (123 km).
- For a round trip, plan for roughly 03h 24m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM MDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
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 01h 42m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
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.
Sunny
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Castle Rock and Windsor.
Turn-by-Turn Driving Directions
Step-by-step road directions between Castle Rock and Windsor.
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1
Start on North Cantril Street
27 m · 8 sec · North Cantril Street
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2
Turn left onto 3rd Street
641 ft · 23 sec · 3rd Street
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3
Exit the roundabout onto 3rd Street
135 m · 18 sec · 3rd Street
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4
Turn right onto North Wilcox Street
2807 ft · 2 min · North Wilcox Street
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5
Take the ramp straight toward I 25 North
1715 ft · 42 sec
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6
Merge slight left
35.9 mi · 43 min
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7
Keep slight right to continue on North Valley Highway
4.3 mi · 6 min · North Valley Highway
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8
Keep slight right to continue on North Valley Highway
5.3 mi · 6 min · North Valley Highway
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9
Continue on Dwight D. Eisenhower Highway
34.3 mi · 34 min · Dwight D. Eisenhower Highway
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10
Take the exit slight right toward CO 392: Windsor, Fort Collins
1197 ft · 29 sec
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11
Turn right onto East County Road 32
2.5 mi · 4 min · East County Road 32
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12
Continue on Highway 392
2636 ft · 44 sec · Highway 392
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13
Continue on Main Street
1.4 mi · 4 min · Main Street
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14
Turn right onto 7th Street
112 m · 10 sec · 7th Street
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15
Turn slight left
42 m · 9 sec
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16
Turn left onto Walnut Street
1482 ft · 43 sec · Walnut Street
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17
Turn right onto 4th Street
148 m · 27 sec · 4th Street
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18
Turn left onto Elm Street
97 m · 14 sec · Elm Street
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19
Arrive at your destination
0 m · 1 sec · Elm Street
Car Route Details
A richer read on the saved driving route between Castle Rock and Windsor.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
I 25 North
Merge slight left
35.9 mi · 00h 43m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Sunny leaving Castle Rock and Mostly Sunny near Windsor.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Castle Rock to Windsor?
The road trip is about 86.1 miles (138.5 km) and usually takes 01h 42m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Northglenn is a useful midpoint, sitting about 43.1 miles from Castle Rock and 43 miles from Windsor.
How much longer is the road route than the straight-line distance?
The direct path is about 76.4 miles (123 km), while the road route adds roughly 9.7 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 8:00 AM to 10:00 AM MDT. If you want a more comfortable same-day return, try to leave by 3:06 PM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $11.24 one way or $22.48 round trip. Estimated CO2 is about 27 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Castle Rock and Mostly Sunny near Windsor.
Stop Ideas Near Northglenn
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Municipal Court Park
Denver City Council
Lafayette City Hall
Historic Brighton City Hall
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Northglenn.
Denver (Bus Station), Colorado
Union Station
Boulder, Colorado
Longmont, Colorado
Flight Path Map
This map shows the direct air route between Castle Rock and Windsor. Straight-line distance: 76.4 mi (122.96 km).
#1 Castle Rock
The most populous city in Douglas County, Colorado.
| Population | 70,567 |
| Coordinates | 39.3722100, -104.8560900 |
| Altitude | 1897 |
| Country | United States |
#2 Windsor
Municipality in Colorado
| Population | 27,659 |
| Coordinates | 40.4774800, -104.9013600 |
| Altitude | 1462 |
| Country | United States |
End: Windsor (-104.90136, 40.47748)
Estimated Travel Time
Distance: 138 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 52m |
| 40 mph (64.37 km/h) | 02h 09m |
| 50 mph (80.47 km/h) | 01h 43m |
| 60 mph (96.56 km/h) | 01h 26m |
| 70 mph (112.65 km/h) | 01h 13m |
| 80 mph (129 km/h) | 01h 04m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.70 | $11.24 | $22.48 |
| Mid-grade | $4.08 | $12.42 | $24.83 |
| Premium | $4.39 | $13.35 | $26.70 |
| Diesel | $4.74 | $14.40 | $28.80 |
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.