How far is Fountain, CO from Castle Rock, CO?
The driving distance from Fountain, CO to Castle Rock, CO is about 55.6 miles (89.5 km), with a travel time of about 00h 56m by car.
- The straight-line flight distance is about 48.4 miles (77.9 km).
- For a round trip, plan for roughly 01h 53m 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 00h 56m.
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.
Census designated place
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny then Slight Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Fountain and Castle Rock.
Turn-by-Turn Driving Directions
Step-by-step road directions between Fountain and Castle Rock.
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1
Start on South Main Street
1001 ft · 21 sec · South Main Street
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2
Turn right onto West Indiana Avenue
1041 ft · 26 sec · West Indiana Avenue
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3
At the end of the road, turn left onto South Santa Fe Avenue
2267 ft · 51 sec · South Santa Fe Avenue
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4
Take the ramp slight right toward I 25 North: Colo Springs
1754 ft · 43 sec
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5
Merge slight left onto Ronald Reagan Highway
11.2 mi · 12 min · Ronald Reagan Highway
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6
Continue on Monument Valley Freeway
8.5 mi · 10 min · Monument Valley Freeway
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7
Continue on Ronald Reagan Highway
32.5 mi · 33 min · Ronald Reagan Highway
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8
Take the exit slight right toward Plum Creek Parkway
1960 ft · 52 sec
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9
Turn right onto West Plum Creek Parkway
719 ft · 27 sec · West Plum Creek Parkway
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10
Turn left onto South Wilcox Street
1431 ft · 49 sec · South Wilcox Street
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11
Enter the roundabout and take exit 2 toward North Wilcox Street
16 m · 1 sec · North Wilcox Street
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12
Exit the roundabout onto North Wilcox Street
1123 ft · 42 sec · North Wilcox Street
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13
Turn right onto 3rd Street
105 m · 11 sec · 3rd Street
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14
Exit the roundabout onto 3rd Street
728 ft · 25 sec · 3rd Street
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15
Turn right onto North Cantril Street
27 m · 3 sec · North Cantril Street
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16
Arrive at your destination
0 m · 1 sec · North Cantril Street
Car Route Details
A richer read on the saved driving route between Fountain 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.
Ronald Reagan Highway
Continue on Ronald Reagan Highway
32.5 mi · 00h 33m
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 Fountain 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 Fountain to Castle Rock?
The road trip is about 55.6 miles (89.5 km) and usually takes 00h 56m 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?
Gleneagle is a useful midpoint, sitting about 27.4 miles from Fountain and 28.3 miles from Castle Rock.
How much longer is the road route than the straight-line distance?
The direct path is about 48.4 miles (77.9 km), while the road route adds roughly 7.2 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 4:36 PM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $7.25 one way or $14.50 round trip. Estimated CO2 is about 17.4 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Fountain and Sunny then Slight Chance Rain Showers near Castle Rock.
Stop Ideas Near Gleneagle
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Gleneagle.
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Flight Path Map
This map shows the direct air route between Fountain and Castle Rock. Straight-line distance: 48.4 mi (77.89 km).
#1 Fountain
City in Colorado, United States
| Population | 31,017 |
| Coordinates | 38.6822200, -104.7008100 |
| Altitude | 1690 |
| 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: 90 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 51m |
| 40 mph (64.37 km/h) | 01h 23m |
| 50 mph (80.47 km/h) | 01h 06m |
| 60 mph (96.56 km/h) | 00h 55m |
| 70 mph (112.65 km/h) | 00h 47m |
| 80 mph (129 km/h) | 00h 41m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.70 | $7.25 | $14.50 |
| Mid-grade | $4.08 | $8.00 | $16.01 |
| Premium | $4.39 | $8.61 | $17.21 |
| Diesel | $4.74 | $9.28 | $18.57 |
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.