Origin
Longmont, CO
Late night in Longmont on Sunday
Local time
1:56 AM
MDT
Current temp
79°F
Unavailable
Live forecast
Trip from Longmont, CO to Castle Pines, CO
Compiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 19, 2026 · Editorial standards
Drive Time
1h 18m
Distance
61.5 mi
99 km
Drive Score
7/10
Good drive
Same Day?
Yes, doable
Fuel Cost
$9
one way
EV Charging
Sparse
1 stations
Best Time to Leave
4 AM
1h 12m
★
6 AM
1h 18m
8 AM
1h 31m
10 AM
1h 23m
12 PM
1h 21m
3 PM
1h 23m
5 PM
1h 30m
8 PM
1h 15m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Longmont, CO
Wikimedia Commons
Castle Pines, CO
Wikimedia Commons
Trip Overview
Longmont to Castle Pines is 61.5 miles and takes about 1 hour 18 minutes via North Valley Highway and Dwight D. Eisenhower Highway, with a fuel budget near $9 and enough daylight to finish in a day. This drive stays within Colorado's Mountain West region, offering a local feel with a mix of highway and turn-heavy sections. It's a manageable distance, making it ideal for a single-day trip without feeling rushed. Plan for a straightforward journey that requires attention to navigation as you transition between different road types.
Main Roads
| Road | Distance | Duration |
|---|---|---|
| North Valley Highway | 40.4 mi | 48m |
| Dwight D. Eisenhower Highway | 11.9 mi | 11m |
| Highway 119 | 3 mi | 3m |
| 3rd Avenue | 1.8 mi | 3m |
| East Ken Pratt Boulevard | 1.6 mi | 2m |
| Chase Lane | 0.7 mi | 2m |
| Lagae Road | 0.6 mi | 1m |
| West I 25 Frontage Road | 0.5 mi | 1m |
Longest stretch:
North Valley Highway
— 40.4 mi, about 48m
Turn-by-Turn Driving Directions
Step-by-step road directions between Longmont, CO and Castle Pines, CO.
1
Start on this road
63 ft
·
6 sec
·
this road
2
Turn right onto 5th Avenue
0.2 mi
·
47 sec
·
5th Avenue
3
Turn right onto Collyer Street
0.2 mi
·
41 sec
·
Collyer Street
4
Turn left onto 3rd Avenue
1.8 mi
·
3 min
·
3rd Avenue
5
Turn left onto CO 119
1.6 mi
·
2 min
·
East Ken Pratt Boulevard
Use the left lane.
6
Continue on CO 119
3.0 mi
·
3 min
·
Highway 119
7
Take the exit onto West I 25 Frontage Road
0.5 mi
·
1 min
·
West I 25 Frontage Road
Toward I 25 South
Use the right lane.
8
Merge onto I 25
12 mi
·
11 min
·
Dwight D. Eisenhower Highway
Use the straight / slight right lanes.
9
Continue on I 25
0.6 mi
·
36 sec
·
North Valley Highway
10
Keep slight right at fork onto I 25
8.8 mi
·
10 min
·
North Valley Highway
Use the straight / slight right lanes.
11
Keep slight right at fork onto I 25
31 mi
·
37 min
·
North Valley Highway
Use the straight / slight left lanes.
12
Take the exit
0.3 mi
·
41 sec
Exit 187
Toward Happy Canyon Road
Use the straight / slight right lanes.
13
Turn right onto CR 33
438 ft
·
8 sec
·
East Happy Canyon Road
14
Enter roundabout onto Lagae Road
11 ft
·
0 sec
·
Lagae Road
15
Continue on Lagae Road
0.3 mi
·
56 sec
·
Lagae Road
16
Turn left onto Chase Lane
0.7 mi
·
2 min
·
Chase Lane
Use the left lane.
17
Continue on Lagae Road
0.2 mi
·
52 sec
·
Lagae Road
18
At end of road, turn right onto Country Club Drive
0.1 mi
·
33 sec
·
Country Club Drive
19
Arrive at destination
Country Club Parkway
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Mid-route town
Meal stop
31 mi into the route
Best for: Lunch, fuel, and a longer reset
This sits close to the middle of the route, so it works well for the longest stop of the day.
Pacing Suggestions
Fuel and coffee
A short stop after about 14 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 30.8 miles from Longmont, 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 135 decision points cluster between mile 6.8 and 60.4 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
8
6.8 mi into trip
|
~10m in
|
West I 25 Frontage Road
Take the exit onto West I 25 Frontage Road toward I 25 South
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the right lane.
Toward I 25 South
6
19.9 mi into trip
|
~24m 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 / slight right lanes.
6
28.7 mi into trip
|
~34m 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 / slight left lanes.
7
59.7 mi into trip
|
~1h 12m in
Take the exit toward Happy Canyon Road
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the straight / slight right lanes.
Exit 187
Toward Happy Canyon Road
6
60.4 mi into trip
|
~1h 14m in
|
Chase Lane
Turn left onto Chase Lane
Lane positioning matters here
Use the left lane.
Fuel & Cost
Regular Gas
$9.27 one way
$18.53 round trip
$3.83/gal
25.4 MPG avg
22 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.05 | $9.81 | $19.62 |
| premium | $4.39 | $10.64 | $21.28 |
| diesel | $5.61 | $13.58 | $27.16 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$9
Estimated CO2 emission: 21.5 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $6 in charging · 0 stops · 68% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 18.5 | 0 | $6.46 | $2.95 |
| Efficient EV | 15.4 | 0 | $5.38 | $2.46 |
| EV Truck/SUV | 24.6 | 0 | $8.61 | $3.94 |
Gas CO2
22 kg
EV CO2
7 kg (68% 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
Castle Pines, CO
Late night in Castle Pines on Sunday
Local time
1:56 AM
MDT
Current temp
76°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 cooler at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
1h 18m 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?
This route is characterized as a turn-heavy local drive, with only a 6% highway share. You'll experience a dynamic road personality, shifting between the faster Dwight D. Eisenhower Highway and local roads like North Valley Highway and Highway 119. The longest uninterrupted stretch you'll encounter is 40.4 miles on North Valley Highway, offering a period of more consistent driving before you need to navigate turns. Expect to be actively engaged with the road as you make your way south.
Only 6% highway — the rest is turn-by-turn surface driving.
19 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 40.4 mi on North Valley Highway.
How Hard Is This Drive?
7/10
Expect a hands-on drive with frequent turns and local roads rather than long highway stretches. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 6.8 miles in near West I 25 Frontage Road.
Driving Effort
7/10
Demanding - plan breaks and stay ahead of the key maneuvers
Balances navigation complexity with total wheel time.
This drive requires moderate attention. Across 61.5 miles you will encounter 13 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: at 6.8 miles (West I 25 Frontage Road): Exit ramp - move to the correct lane early. Lane positioning matters here; at 19.9 miles (I 25 / North Valley Highway): Highway fork - watch signs carefully. Lane positioning matters here; at 28.7 miles (I 25 / North Valley Highway): Highway fork - watch signs carefully. Lane positioning matters here.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 1h 18m. Total distance: 61.5 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
1h 18m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
Scenic Drive
Mostly surface roads route profile.
Frequently Asked Questions
The longest stretch is about 40.4 miles on North Valley Highway. 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 Castle Pines, 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 6.8 miles (West I 25 Frontage Road): Exit ramp - move to the correct lane early. Lane positioning matters here; at 19.9 miles (I 25 / North Valley Highway): Highway fork - watch signs carefully. Lane positioning matters here; at 28.7 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 Castle Pines, 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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