Origin
Niwot, CO
Late night in Niwot on Tuesday
Local time
4:48 AM
MDT
Current temp
57°F
Unavailable
Live forecast
Trip from Niwot, CO to Thornton, 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
40m
Distance
27.7 mi
45 km
Drive Score
6/10
Good drive
Same Day?
Yes, doable
Fuel Cost
$4
one way
EV Charging
Unknown
Best Time to Leave
4 AM
0h 37m
★
6 AM
0h 40m
8 AM
0h 47m
10 AM
0h 43m
12 PM
0h 42m
3 PM
0h 43m
5 PM
0h 47m
8 PM
0h 38m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Niwot, CO
Mikhail Nilov
Thornton, CO
Wikimedia Commons
Trip Overview
This straightforward 27.7-mile drive from Niwot, CO to Thornton, CO will take you about 36 minutes to complete. With no highway driving, it's a local road experience designed for a single day trip, making it easy to fit into your schedule. Expect to spend around $4 on fuel for this journey through the Mountain West region. The profile indicates a route with numerous turns, so be prepared for a more engaged driving experience rather than a straight shot. It’s a convenient option for a quick hop between these two Colorado communities.
Main Roads
| Road | Distance | Duration |
|---|---|---|
| Mineral Road | 9.9 mi | 16m |
| North Valley Highway | 7.6 mi | 8m |
| Dwight D. Eisenhower Highway | 7 mi | 7m |
| North 79th Street | 1 mi | 2m |
| Thornton Parkway | 1 mi | 2m |
| Dorothy Boulevard | 0.2 mi | <1m |
| 2nd Avenue | 0.1 mi | <1m |
| Franklin Street | <0.1 mi | <1m |
Longest stretch:
Mineral Road
— 9.9 mi, about 16m
Turn-by-Turn Driving Directions
Step-by-step road directions between Niwot, CO and Thornton, CO.
1
Start on Franklin Street
453 ft
·
25 sec
·
Franklin Street
2
Turn left onto 2nd Avenue
0.1 mi
·
32 sec
·
2nd Avenue
3
Turn slight left onto CR 34
199 ft
·
8 sec
·
Niwot Road
4
Turn right onto CR 25
1.0 mi
·
2 min
·
North 79th Street
5
Turn left onto CO 52
9.9 mi
·
16 min
·
Mineral Road
Use the straight lane.
6
Take the ramp
0.4 mi
·
51 sec
Toward I 25 South: Denver
Use the right lane.
7
Merge onto I 25
7.0 mi
·
7 min
·
Dwight D. Eisenhower Highway
Use the straight / slight right lanes.
8
Continue on I 25
0.6 mi
·
36 sec
·
North Valley Highway
9
Keep slight right at fork onto I 25
7.0 mi
·
8 min
·
North Valley Highway
Use the straight / slight right lanes.
10
Take the exit
0.2 mi
·
22 sec
Exit 220
Toward Thornton Parkway
Use the straight / slight right lanes.
11
Keep slight left at fork
116 ft
·
4 sec
Toward Thornton Parkway East
12
Turn left onto Thornton Parkway
1.0 mi
·
2 min
·
Thornton Parkway
Use the left / straight lanes.
13
Turn right onto Dorothy Boulevard
0.2 mi
·
51 sec
·
Dorothy Boulevard
Use the right lane.
14
Turn right
116 ft
·
8 sec
15
Arrive at destination
Heads-up: tricky spots
5 of 115 decision points cluster between mile 1.3 and 27.4 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
6
1.3 mi into trip
|
~3m in
|
CO 52 / Mineral Road
Turn left onto CO 52 / Mineral Road
Lane positioning matters here
Use the straight lane.
6
19.2 mi into trip
|
~28m 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.
7
26.2 mi into trip
|
~36m in
Take the exit toward Thornton Parkway
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the straight / slight right lanes.
Exit 220
Toward Thornton Parkway
6
26.4 mi into trip
|
~36m in
Keep slight left at fork toward Thornton Parkway East
Highway fork - watch signs carefully
Toward Thornton Parkway East
6
27.4 mi into trip
|
~39m in
|
Dorothy Boulevard
Turn right onto Dorothy Boulevard
Lane positioning matters here
Use the right lane.
Fuel & Cost
Regular Gas
$4.17 one way
$8.35 round trip
$3.83/gal
25.4 MPG avg
10 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.05 | $4.42 | $8.84 |
| premium | $4.39 | $4.79 | $9.58 |
| diesel | $5.61 | $6.12 | $12.23 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$4
Estimated CO2 emission: 9.7 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $3 in charging · 0 stops · 70% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 8.3 | 0 | $2.91 | $1.33 |
| Efficient EV | 6.9 | 0 | $2.42 | $1.11 |
| EV Truck/SUV | 11.1 | 0 | $3.88 | $1.77 |
Gas CO2
10 kg
EV CO2
3 kg (70% 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
Thornton, CO
Late night in Thornton on Tuesday
Local time
4:48 AM
MDT
Current temp
36°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
21 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
40m 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,' meaning you'll be navigating through neighborhoods and local streets for the entire 27.7 miles. With a 0% highway share, you won't encounter any high-speed freeway sections, and there's no 'longest stretch' to speak of since it's composed of a series of shorter segments connected by turns. Expect to be actively steering and adjusting your speed frequently as you make your way from Niwot Road onto North 79th Street and other local thoroughfares. The drive's personality is defined by its frequent changes in direction, keeping you connected to the local landscape.
Only 4% highway — the rest is turn-by-turn surface driving.
15 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 9.9 mi on Mineral Road.
How Hard Is This Drive?
8/10
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 1.3 miles in near CO 52 / Mineral Road.
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 11 decision points packed into just 27.7 miles, you will need to pay attention to lane changes and exits — but the whole thing is over in 40m.
Where does it get tricky?
The main spots that need attention: at 1.3 miles (CO 52 / Mineral Road): Lane positioning matters here; at 19.2 miles (I 25 / North Valley Highway): Highway fork - watch signs carefully. Lane positioning matters here; at 26.2 miles: Exit ramp - move to the correct lane early. Lane positioning matters here.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 40m. Total distance: 27.7 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
40m 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 9.9 miles on Mineral Road. 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 Thornton, 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 1.3 miles (CO 52 / Mineral Road): Lane positioning matters here; at 19.2 miles (I 25 / North Valley Highway): Highway fork - watch signs carefully. Lane positioning matters here; at 26.2 miles: Exit ramp - move to the correct lane early. Lane positioning matters here.
Yes. A round trip is manageable in a single day if you plan a break at Thornton, 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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