How far is Montrose, CO from Castle Rock, CO?
The driving distance from Montrose, CO to Castle Rock, CO is about 280.4 miles (451.3 km), with a travel time of about 04h 58m by car.
- The straight-line flight distance is about 173.7 miles (279.5 km).
- For a round trip, plan for roughly 09h 56m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM MDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
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 04h 58m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
This departure sits inside the recommended comfort window for the route.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Town of the United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Driving Route Map
The map below follows the saved road route between Montrose and Castle Rock.
Turn-by-Turn Driving Directions
Step-by-step road directions between Montrose and Castle Rock.
-
1
Start on South 1st Street
51 m · 13 sec · South 1st Street
-
2
Turn left onto South Cascade Avenue
105 m · 19 sec · South Cascade Avenue
-
3
Turn right onto East Main Street
2.5 mi · 6 min · East Main Street
-
4
Continue straight
121.3 mi · 2 hr 53 min
-
5
Turn left
11.2 mi · 18 min
-
6
Continue straight
9.7 mi · 16 min
-
7
Take the exit slight right toward US 285 North
1151 ft · 22 sec
-
8
Merge slight left
13.6 mi · 18 min
-
9
Turn right
73.8 mi · 1 hr 33 min
-
10
Turn sharp left onto South 31st Street
1.2 km · 2 min · South 31st Street
-
11
Turn right onto West Fontanero Street
1403 ft · 32 sec · West Fontanero Street
-
12
Continue on Fontmore Road
1 km · 1 min · Fontmore Road
-
13
Continue on West Fillmore Street
1.5 mi · 3 min · West Fillmore Street
-
14
Take the ramp left toward I 25
49 m · 6 sec
-
15
Turn left
653 ft · 18 sec
-
16
Merge slight left onto Monument Valley Freeway
3.2 mi · 4 min · Monument Valley Freeway
-
17
Continue on Ronald Reagan Highway
32.5 mi · 33 min · Ronald Reagan Highway
-
18
Take the exit slight right toward Plum Creek Parkway
1960 ft · 52 sec
-
19
Turn right onto West Plum Creek Parkway
719 ft · 27 sec · West Plum Creek Parkway
-
20
Turn left onto South Wilcox Street
1431 ft · 49 sec · South Wilcox Street
-
21
Enter the roundabout and take exit 2 toward North Wilcox Street
16 m · 1 sec · North Wilcox Street
-
22
Exit the roundabout onto North Wilcox Street
1123 ft · 42 sec · North Wilcox Street
-
23
Turn right onto 3rd Street
105 m · 11 sec · 3rd Street
-
24
Exit the roundabout onto 3rd Street
728 ft · 25 sec · 3rd Street
-
25
Turn right onto North Cantril Street
27 m · 3 sec · North Cantril Street
-
26
Arrive at your destination
0 m · 1 sec · North Cantril Street
Car Route Details
A richer read on the saved driving route between Montrose and Castle Rock.
Interchange-aware route
The drive includes several ramps, exits, or merges, so checking the next few maneuvers before busy interchanges is useful.
East Main Street
Continue straight
121 mi · 02h 53m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Sunny leaving Montrose and Sunny near Castle Rock.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Montrose to Castle Rock?
The road trip is about 280.4 miles (451.3 km) and usually takes 04h 58m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Buena Vista is a useful midpoint, sitting about 136.3 miles from Montrose and 144.1 miles from Castle Rock.
How much longer is the road route than the straight-line distance?
The direct path is about 173.7 miles (279.5 km), while the road route adds roughly 106.7 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 6:00 AM to 8:00 AM MDT. If you want a more comfortable same-day return, try to leave by 7:04 AM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $36.57 one way or $73.15 round trip. Estimated CO2 is about 87.9 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Montrose and Sunny near Castle Rock.
Stop Ideas Near Buena Vista
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 Buena Vista.
Buena Vista, CO
Poncha Springs, CO
Salida, CO
Fairplay, CO
Flight Path Map
This map shows the direct air route between Montrose and Castle Rock. Straight-line distance: 173.68 mi (279.51 km).
#1 Montrose
Coastal resort town and former royal burgh in Angus, Scotland
| Population | 19,902 |
| Coordinates | 38.4783200, -107.8761700 |
| Altitude | 1770 |
| 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: 451 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 09h 20m |
| 40 mph (64.37 km/h) | 07h 00m |
| 50 mph (80.47 km/h) | 05h 36m |
| 60 mph (96.56 km/h) | 04h 40m |
| 70 mph (112.65 km/h) | 04h 00m |
| 80 mph (129 km/h) | 03h 29m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.70 | $36.57 | $73.15 |
| Mid-grade | $4.08 | $40.39 | $80.78 |
| Premium | $4.39 | $43.43 | $86.85 |
| Diesel | $4.74 | $46.85 | $93.70 |
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 · May 31, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.