Origin
Castle Rock, CO
Late night in Castle Rock on Tuesday
Local time
3:34 AM
MDT
Current temp
55°F
Unavailable
Live forecast
Trip from Castle Rock, CO to Highlands Ranch, CO
Pin this tripCompiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 21, 2026 · Editorial standards
Drive Time
27m
Distance
20 mi
32 km
Drive Score
7/10
Good drive
Same Day?
Yes, doable
Fuel Cost
$3
one way
EV Charging
Unknown
Best Time to Leave
4 AM
0h 25m
★
6 AM
0h 27m
8 AM
0h 32m
10 AM
0h 29m
12 PM
0h 28m
3 PM
0h 29m
5 PM
0h 32m
8 PM
0h 26m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Castle Rock, CO
Wikimedia Commons
Highlands Ranch, CO
Wikimedia Commons
Trip Overview
This 20-mile drive from Castle Rock to Highlands Ranch, Colorado, is a quick trip that takes about 27 minutes. It's a straightforward journey primarily using I-25 and CO 470, with a final stretch on South University Boulevard. Given its short duration and minimal mileage, this route is perfectly suited as a single-day trip with no need for an overnight stay. The estimated fuel cost is around $3, making it an economical option. You'll experience a highway-focused drive that remains within the familiar Mountain West region of Colorado.
Main Roads
| Road | Distance | Duration |
|---|---|---|
| I 25 | 11.7 mi | 12m |
| CO 470 | 4.2 mi | 4m |
| South University Boulevard | 0.8 mi | 1m |
| North Wilcox Street | 0.5 mi | 1m |
| Venneford Ranch Road | 0.5 mi | 1m |
| East Thistle Ridge Road | 0.3 mi | 1m |
| 3rd Street | 0.2 mi | <1m |
| South Wild Iris Run | <0.1 mi | <1m |
Longest stretch:
I 25
— 11.7 mi, about 12m
Turn-by-Turn Driving Directions
Step-by-step road directions between Castle Rock, CO and Highlands Ranch, CO.
1
Start on North Cantril Street
90 ft
·
8 sec
·
North Cantril Street
2
Turn left onto 3rd Street
0.1 mi
·
22 sec
·
3rd Street
3
Continue on 3rd Street
442 ft
·
17 sec
·
3rd Street
4
Turn right onto North Wilcox Street
0.5 mi
·
1 min
·
North Wilcox Street
5
Take the ramp
0.3 mi
·
41 sec
Toward I 25 North
6
Merge onto I 25
12 mi
·
12 min
·
I 25
Use the straight / slight right lanes.
7
Take the exit
0.2 mi
·
21 sec
Exit 194
Toward CO 470 West, E 470 North Toll: Grand Junction, Limon
Use the straight / slight right lanes.
8
Keep slight left at fork
0.4 mi
·
50 sec
Exit 194
Toward CO 470 West: Grand Junction
Use the slight left lane.
9
Keep slight right at fork
0.5 mi
·
50 sec
Exit 194
Toward CO 470 West: Grand Junction, Quebec Street
Use the slight right lane.
10
Continue on CO 470
4.2 mi
·
4 min
·
CO 470
Use the straight / slight right lanes.
11
Take the exit
0.3 mi
·
25 sec
Exit 21
Toward CO 177: University Boulevard
Use the straight / slight right lanes.
12
Turn left onto CO 177
0.8 mi
·
1 min
·
South University Boulevard
Use the left / straight / right lanes.
13
Turn right onto Venneford Ranch Road
0.5 mi
·
1 min
·
Venneford Ranch Road
14
Turn right onto East Thistle Ridge Road
0.3 mi
·
1 min
·
East Thistle Ridge Road
15
Turn left onto South Wild Iris Run
351 ft
·
15 sec
·
South Wild Iris Run
16
Arrive at destination
South Wild Iris Run
Heads-up: tricky spots
5 of 135 decision points cluster between mile 0.1 and 18 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
7
0.1 mi into trip
|
~0m in
|
3rd Street
Enter roundabout onto 3rd Street
Roundabout - know your exit number before entering
8
12.8 mi into trip
|
~15m in
Take the exit toward CO 470 West, E 470 North Toll: Grand Junction, Limon
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Exit 194
Toward CO 470 West, E 470 North Toll: Grand Jun...
8
12.9 mi into trip
|
~15m in
Keep slight left at fork toward CO 470 West: Grand Junction
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left lane.
Exit 194
Toward CO 470 West: Grand Junction
9
13.3 mi into trip
|
~16m in
Keep slight right at fork toward CO 470 West: Grand Junction, Quebec Street
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Exit 194
Toward CO 470 West: Grand Junction, Quebec Stre...
7
18 mi into trip
|
~22m in
Take the exit toward CO 177: University Boulevard
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the straight / slight right lanes.
Exit 21
Toward CO 177: University Boulevard
Fuel & Cost
Regular Gas
$3.01 one way
$6.03 round trip
$3.83/gal
25.4 MPG avg
7 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.05 | $3.19 | $6.38 |
| premium | $4.39 | $3.46 | $6.92 |
| diesel | $5.61 | $4.42 | $8.83 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$3
Estimated CO2 emission: 7 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $2 in charging · 0 stops · 71% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 6 | 0 | $2.10 | $0.96 |
| Efficient EV | 5 | 0 | $1.75 | $0.80 |
| EV Truck/SUV | 8 | 0 | $2.80 | $1.28 |
Gas CO2
7 kg
EV CO2
2 kg (71% less)
This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.
DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.
Travel Intel
Current conditions at both ends of the drive.
Destination
Highlands Ranch, CO
Late night in Highlands Ranch on Tuesday
Local time
3:34 AM
MDT
Current temp
58°F
Unavailable
Live forecast
Time zone
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
3 degrees warmer at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
27m on the road
Use the two city cards together: check the sky where you start, then compare it with the local time and temperature at arrival.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
What kind of drive is this?
Expect a drive that is 79% highway, meaning you'll spend most of your time on faster-paced roads. The longest uninterrupted stretch you'll encounter is 11.7 miles on I-25. This route is characterized by its highway-focused profile, offering a consistent driving experience for the majority of the journey. While transitions between I-25, CO 470, and South University Boulevard will occur, the overall feel is one of efficient travel.
79% highway — fuel and pacing are the main things to plan.
16 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 11.7 mi on I 25.
How Hard Is This Drive?
8/10
This is a straightforward highway drive that stays mostly on I 25 and CO 470. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 0.1 miles in near 3rd Street.
Driving Effort
8/10
Focused - busy navigation packed into a short drive
Balances navigation complexity with total wheel time.
This is a short but busy drive. With 13 decision points packed into just 20 miles, you will need to pay attention to lane changes and exits — but the whole thing is over in 27m.
Where does it get tricky?
The main spots that need attention: at 0.1 miles (3rd Street): Roundabout - know your exit number before entering; at 12.8 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 12.9 miles: Highway fork - watch signs carefully. Lane positioning matters here.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Castle Rock, CO and Highlands Ranch, CO, road signs point toward E 470 North Toll: Grand Junction and Limon.
E 470 North Toll: Grand Junction
12.8 mi in
|
~15m
Limon
12.8 mi in
|
~15m
About the Cities
Starting in Castle Rock, CO
Full guide →Castle Rock is a town of about 81,000 in the Denver Metropolitan Area of the western U.S. state of Colorado. The seat of Douglas County, the town lies 26 miles (42 km) south-southeast of Denver.
City content from Wikivoyage (CC BY-SA 4.0) and Wikidata (CC0).
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 27m. Total distance: 20 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
27m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
First-Time Driver
Mostly highway driving (79%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 11.7 miles on I 25. The full list of main roads is in the Roads section above.
It helps. This route has a higher-than-average number of complex decision points, which get harder in the dark. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at Highlands Ranch, CO before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Yes. At under 2 hours behind the wheel, this works well for families — plan one quick stop if you have younger kids.
The main spots that need attention: at 0.1 miles (3rd Street): Roundabout - know your exit number before entering; at 12.8 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 12.9 miles: Highway fork - watch signs carefully. Lane positioning matters here.
Yes. A round trip is manageable in a single day if you plan a break at Highlands Ranch, CO before heading back.
How this page is built
Compiled by the US Trip Planner planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, and EIA for fuel prices. See our methodology for refresh cadence and limitations.
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