How far is Southglenn, CO from Castle Rock, CO?
The driving distance from Southglenn, CO to Castle Rock, CO is about 19.5 miles (31.4 km), with a travel time of about 00h 28m by car.
- The straight-line flight distance is about 15.7 miles (25.3 km).
- For a round trip, plan for roughly 00h 57m 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 28m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
This departure sits inside the recommended comfort window for the route.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny then Chance Showers And Thunderstorms
Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Southglenn and Castle Rock.
Turn-by-Turn Driving Directions
Step-by-step road directions between Southglenn and Castle Rock.
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1
Start on South Fillmore Circle
36 m · 6 sec · South Fillmore Circle
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2
Continue on South Fillmore Circle
97 m · 20 sec · South Fillmore Circle
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3
Turn left onto East Fremont Drive
583 ft · 31 sec · East Fremont Drive
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4
Turn left onto South Saint Paul Street
764 ft · 37 sec · South Saint Paul Street
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5
Turn left onto South Madison Court
51 m · 10 sec · South Madison Court
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6
Turn right onto East Easter Avenue
1733 ft · 49 sec · East Easter Avenue
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7
At the end of the road, turn right onto East Nobles Road
1059 ft · 34 sec · East Nobles Road
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8
Turn left onto South Colorado Boulevard
2504 ft · 54 sec · South Colorado Boulevard
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9
Turn right onto East Arapahoe Road
3 mi · 5 min · East Arapahoe Road
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10
Take the ramp slight right toward I 25 South
1395 ft · 36 sec
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11
Merge slight left onto South Valley Highway
14.8 mi · 16 min · South Valley Highway
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12
Take the exit slight right toward Wilcox Street, Wolfensberger Road
1213 ft · 32 sec
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13
Turn left onto East Wolfensberger Road
132 m · 21 sec · East Wolfensberger Road
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14
Continue on North Wilcox Street
2093 ft · 1 min · North Wilcox Street
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15
Turn left onto 5th Street
979 ft · 37 sec · 5th Street
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16
Turn right onto North Cantril Street
837 ft · 29 sec · North Cantril Street
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17
Arrive at your destination
0 m · 1 sec · North Cantril Street
Car Route Details
A richer read on the saved driving route between Southglenn and Castle Rock.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
South Valley Highway
Merge slight left onto South Valley Highway
14.8 mi · 00h 16m
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 Chance Showers And Thunderstorms leaving Southglenn and Chance Showers And Thunderstorms near Castle Rock.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Southglenn to Castle Rock?
The road trip is about 19.5 miles (31.4 km) and usually takes 00h 28m 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?
Carriage Club is a useful midpoint, sitting about 10.3 miles from Southglenn and 9.3 miles from Castle Rock.
How much longer is the road route than the straight-line distance?
The direct path is about 15.7 miles (25.3 km), while the road route adds roughly 3.8 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 7:32 PM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $2.55 one way or $5.10 round trip. Estimated CO2 is about 6.1 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny then Chance Showers And Thunderstorms around Southglenn and Chance Showers And Thunderstorms near Castle Rock.
Stop Ideas Near Carriage Club
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
City of Littleton
Aurora City Water Resources
Aurora Municipal Center
Town Hall Arts Center
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Carriage Club.
Denver (Bus Station), Colorado
Union Station
Pine Junction, CO
Boulder, Colorado
Flight Path Map
This map shows the direct air route between Southglenn and Castle Rock. Straight-line distance: 15.73 mi (25.31 km).
#1 Southglenn
Neighborhood in Centennial, Colorado, United States
| Population | 42,268 |
| Coordinates | 39.5872100, -104.9527600 |
| Altitude | 1705 |
| 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: 31 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 39m |
| 40 mph (64.37 km/h) | 00h 29m |
| 50 mph (80.47 km/h) | 00h 23m |
| 60 mph (96.56 km/h) | 00h 19m |
| 70 mph (112.65 km/h) | 00h 16m |
| 80 mph (129 km/h) | 00h 14m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.70 | $2.55 | $5.10 |
| Mid-grade | $4.08 | $2.82 | $5.64 |
| Premium | $4.39 | $3.03 | $6.06 |
| Diesel | $4.74 | $3.27 | $6.54 |
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 · Jun 03, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.