Castle Rock, CO to Dacono, CO is 56.3 miles and takes about 1 hour 10 minutes via I 25 and Dwight D. Eisenhower Highway, with a fuel budget near $10 and enough daylight to finish in a day. This short drive stays within the Mountain West region, specifically Colorado, and primarily follows major interstate highways. It's a straightforward trip, ideal for a quick transit or a day trip without extensive planning. You'll find the route efficient for getting between these two points in the state.
Main Roads
Road
Distance
Duration
I 25
35.9 mi
43m
North Valley Highway
9.6 mi
11m
Dwight D. Eisenhower Highway
7.1 mi
7m
CO 52
1.9 mi
3m
North Wilcox Street
0.5 mi
1m
3rd Street
0.2 mi
<1m
6th Street
0.1 mi
<1m
Ash Street
0.1 mi
<1m
Longest stretch:
I 25
— 35.9 mi, about 43m
Traffic on I-25
Hour-of-day weekday pattern from 12 FHWA count stations on your route.
Peak
7 AM
~5,680 veh/hr typical
Quietest
1 AM
~464 veh/hr
Peak-to-quiet ratio
12.2×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 52 weeks of 2023 FHWA Travel Monitoring Analysis System data. Weekday hours only (Mon–Fri).
Turn-by-Turn Driving Directions
Step-by-step road directions between Castle Rock, CO and Dacono, 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
36 mi·43 min·I 25
Use the straight / slight right lanes.
7
Keep slight right at fork onto I 25
4.3 mi·5 min·North Valley Highway
Use the slight right lane.
8
Keep slight right at fork onto I 25
5.3 mi·5 min·North Valley Highway
Use the straight / right lanes.
9
Continue on I 25
7.1 mi·7 min·Dwight D. Eisenhower Highway
10
Take the exit
0.3 mi·43 sec
Exit 235Toward CO 52: Dacono, Fort Lupton, Frederick, NiwotUse the slight right lane.
11
Turn right onto CO 52
1.9 mi·3 min·CO 52
Use the left lane.
12
Turn straight
331 ft·13 sec
13
Turn slight right onto Colorado Boulevard
490 ft·14 sec·Colorado Boulevard
14
Turn left onto 6th Street
0.1 mi·29 sec·6th Street
15
Turn right onto Ash Street
0.1 mi·29 sec·Ash Street
16
Turn left
117 ft·8 sec
17
Arrive at destination
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
The midpoint is around 28.1 miles from Castle Rock, CO, which is a good place for a longer meal and fuel stop.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Heads-up: tricky spots
5 of 12
5 decision points cluster between mile 0 and 53.6 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
5
0 mi into trip|~0m in|3rd Street
Turn left onto 3rd Street
Navigation decision point
7
0.1 mi into trip|~0m in|3rd Street
Enter roundabout onto 3rd Street
Roundabout - know your exit number before entering
6
37 mi into trip|~46m in|I 25 / North Valley Highway
Keep slight right at fork onto I 25 / North Valley Highway
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight right lane.
6
41.3 mi into trip|~51m in|I 25 / North Valley Highway
Keep slight right at fork onto I 25 / North Valley Highway
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / right lanes.
8
53.6 mi into trip|~1h 4m in
Take the exit toward CO 52: Dacono, Fort Lupton, Frederick, Niwot
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Exit 235
Toward CO 52: Dacono, Fort Lupton, Frederick, N...
Fuel & Cost
Regular Gas
$8.58 one way
$17.17 round trip
$3.87/gal25.4 MPG avg20 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.12
$9.13
$18.25
premium
$4.45
$9.87
$19.74
diesel
$4.80
$10.63
$21.26
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$9
Estimated CO2 emission: 19.7 kg one way.
Prices: EIA weekly data, 2026-07-13.
Driving Electric?
About $6 in charging
· 0 stops
· 65% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
16.9
0
$5.91
$2.70
Efficient EV
14.1
0
$4.93
$2.25
EV Truck/SUV
22.5
0
$7.88
$3.60
Gas CO2
20 kg
EV CO2
7 kg (65% 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.
Forecast as of Jul 12, 2026
Origin
Castle Rock, CO
Late night
in Castle Rock on Sunday
Local time
1:04 AM
MDT
Current temp
61°F
Clear
S 8 mph0% chanceLive forecast
Heat Advisory
Heat Advisory issued July 11 at 10:50PM MDT until July 13 at 12:00AM MDT by NWS Grand Junction CO
Heat Advisory
Heat Advisory issued July 11 at 10:50PM MDT until July 13 at 12:00AM MDT by NWS Grand Junction CO
Destination
Dacono, CO
Late night
in Dacono on Sunday
Local time
1:04 AM
MDT
Current temp
62°F
Clear
WNW 5 mph0% chanceLive forecast
Heat Advisory
Heat Advisory issued July 11 at 10:50PM MDT until July 13 at 12:00AM MDT by NWS Grand Junction CO
Heat Advisory
Heat Advisory issued July 11 at 10:50PM MDT until July 13 at 12:00AM MDT by NWS Grand Junction CO
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
1 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
1h 10m on the road
The weather snapshot is not static. If you are leaving later, give both cities one more quick forecast check before departure.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
More Details
What kind of drive is this?
This route is mostly highway, with 67% of the 56.3 miles on primary roads like I 25. You'll experience a significant stretch of 35.9 miles on I 25 before transitioning to surface roads like North Valley Highway. Expect a high volume of exits and potential merging traffic as you navigate this stretch of highway.
67% highway — fuel and pacing are the main things to plan.
17 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 35.9 mi on I 25.
How Hard Is This Drive?
7/10
This is a straightforward highway drive that stays mostly on I 25 and North Valley Highway. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes early in the drive near 3rd Street.
Driving Effort7/10
Demanding - plan breaks and stay ahead of the key maneuvers
Balances navigation complexity with total wheel time.
This drive requires moderate attention. Across 56.3 miles you will encounter 12 spots where lane choice or exit timing matters. Not difficult for experienced highway drivers, but worth previewing the tricky sections before you go.
Where does it get tricky?
The main spots that need attention: near the start (3rd Street): Navigation decision point; at 0.1 miles (3rd Street): Roundabout - know your exit number before entering; at 37 miles (I 25 / North Valley Highway): Highway fork - watch signs carefully. Lane positioning matters here.
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.
Top landmarks
•Castle Rock Depot — railway station in Castle Rock, Colorado
Doable as a same-day drive at 1h 10m. Total distance: 56.3 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
1h 10m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
First-Time Driver
Mostly highway driving (67%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 35.9 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 Dacono, 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: near the start (3rd Street): Navigation decision point; at 0.1 miles (3rd Street): Roundabout - know your exit number before entering; at 37 miles (I 25 / North Valley Highway): 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 Dacono, CO before heading back.
