Origin
Westminster, CO
Late night in Westminster on Sunday
Local time
1:54 AM
MDT
Current temp
46°F
Unavailable
Live forecast
Trip from Westminster, CO to Boulder, CO
Compiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 19, 2026 · Editorial standards
Drive Time
27m
Distance
20.2 mi
33 km
Drive Score
6/10
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 28m
8 AM
0h 33m
10 AM
0h 30m
12 PM
0h 29m
3 PM
0h 30m
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.
Westminster, CO
Wikimedia Commons
Boulder, CO
Wikimedia Commons
Trip Overview
Westminster to Boulder is 20.2 miles and takes about 27m via Denver–Boulder Turnpike, with a fuel budget near $3 and enough daylight to finish in a day. This short trip stays within the Mountain West region, offering a straightforward drive between two Colorado cities. It's a quick hop, perfect for a day trip or an easy transfer between locations. Given its short duration, you won't need extensive planning, but it's good to be aware of the main roads you'll be using.
Main Roads
| Road | Distance | Duration |
|---|---|---|
| Denver–Boulder Turnpike | 17.3 mi | 20m |
| 28th Street | 0.8 mi | 1m |
| Arapahoe Avenue | 0.6 mi | 1m |
| West 80th Avenue | 0.5 mi | 1m |
| Lowell Boulevard | 0.2 mi | <1m |
| Federal Boulevard | 0.2 mi | <1m |
| West 78th Avenue | 0.2 mi | <1m |
| Newton Street | 0.1 mi | <1m |
Longest stretch:
Denver–Boulder Turnpike
— 17.3 mi, about 20m
Turn-by-Turn Driving Directions
Step-by-step road directions between Westminster, CO and Boulder, CO.
1
Start on Newton Street
0.1 mi
·
26 sec
·
Newton Street
2
Turn right onto West 78th Avenue
0.2 mi
·
29 sec
·
West 78th Avenue
3
At end of road, turn right onto North Turnpike Drive
106 ft
·
10 sec
·
North Turnpike Drive
4
Turn left onto Lowell Boulevard
0.2 mi
·
28 sec
·
Lowell Boulevard
Use the left lane.
5
Turn right onto West 80th Avenue
0.5 mi
·
1 min
·
West 80th Avenue
6
Turn right onto US 287
0.2 mi
·
19 sec
·
Federal Boulevard
Use the right lane.
7
Take the ramp
0.3 mi
·
37 sec
Toward US 36 West: Boulder
Use the right lane.
8
Merge onto US 36
1.2 mi
·
1 min
·
Denver–Boulder Turnpike
9
Keep slight right at fork onto US 36
2.3 mi
·
2 min
·
Denver–Boulder Turnpike
10
Keep slight right at fork onto US 36
1.9 mi
·
2 min
·
Denver–Boulder Turnpike
Use the straight / slight right lanes.
11
Keep slight right at fork onto US 36
2.1 mi
·
2 min
·
Denver–Boulder Turnpike
Use the straight / slight right lanes.
12
Keep slight right at fork onto US 36
2.9 mi
·
3 min
·
Denver–Boulder Turnpike
Use the straight / slight right lanes.
13
Keep slight right at fork onto US 36
2.4 mi
·
2 min
·
Denver–Boulder Turnpike
Use the straight / slight right lanes.
14
Keep slight right at fork onto US 36
2.2 mi
·
2 min
·
Denver–Boulder Turnpike
15
Keep slight left at fork onto US 36
2.3 mi
·
2 min
·
Denver–Boulder Turnpike
Use the straight lane.
16
Continue on US 36
0.8 mi
·
1 min
·
28th Street
Use the left / straight lanes.
17
Turn left onto Arapahoe Avenue
0.6 mi
·
1 min
·
Arapahoe Avenue
Use the left lane.
18
Turn right onto 19th Street
143 ft
·
11 sec
·
19th Street
Use the straight / right lanes.
19
Turn left
87 ft
·
4 sec
20
Arrive at destination
Heads-up: tricky spots
5 of 175 decision points cluster between mile 0.3 and 9 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
7
0.3 mi into trip
|
~1m in
|
Lowell Boulevard
Turn left onto Lowell Boulevard
Lane positioning matters here
Use the left lane.
6
1 mi into trip
|
~2m in
|
US 287 / Federal Boulevard
Turn right onto US 287 / Federal Boulevard
Lane positioning matters here
Use the right lane.
6
5 mi into trip
|
~7m in
|
US 36 / Denver–Boulder Turnpike
Keep slight right at fork onto US 36 / Denver–Boulder Turnpike
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
6
6.9 mi into trip
|
~10m in
|
US 36 / Denver–Boulder Turnpike
Keep slight right at fork onto US 36 / Denver–Boulder Turnpike
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
6
9 mi into trip
|
~12m in
|
US 36 / Denver–Boulder Turnpike
Keep slight right at fork onto US 36 / Denver–Boulder Turnpike
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
Fuel & Cost
Regular Gas
$3.04 one way
$6.09 round trip
$3.83/gal
25.4 MPG avg
7 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.05 | $3.22 | $6.44 |
| premium | $4.39 | $3.49 | $6.99 |
| diesel | $5.61 | $4.46 | $8.92 |
Estimated Tolls: $1.21
Denver–Boulder Turnpike
(17.3 mi)
$1.21
Toll estimates based on average 2024-2025 rates. EZ-Pass/SunPass discounts may lower the actual cost.
Drive Cost (one way)
Fuel
$3
Tolls
$1
Total
$4
Estimated CO2 emission: 7.1 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 | 6.1 | 0 | $2.12 | $0.97 |
| Efficient EV | 5.1 | 0 | $1.77 | $0.81 |
| EV Truck/SUV | 8.1 | 0 | $2.83 | $1.29 |
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
Boulder, CO
Late night in Boulder on Sunday
Local time
1:54 AM
MDT
Current temp
72°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
26 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?
This is a highway-focused drive, with 86% of the route utilizing major roadways. You'll spend most of your time on the Denver–Boulder Turnpike, which accounts for the longest continuous stretch of 17.3 miles. The profile suggests a consistent, likely faster-paced journey, with limited transitions to slower, local roads. Expect a smooth, efficient drive for the majority of the 20.2 miles.
86% highway — fuel and pacing are the main things to plan.
20 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 17.3 mi on Denver–Boulder Turnpike.
How Hard Is This Drive?
9/10
This is a straightforward highway drive that stays mostly on Denver–Boulder Turnpike and 28th Street. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 0.3 miles in near Lowell Boulevard.
Driving Effort
9/10
Focused - lots of decisions in a short distance, but it is over quickly
Balances navigation complexity with total wheel time.
This is a short but busy drive. With 17 decision points packed into just 20.2 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 0.3 miles (Lowell Boulevard): Lane positioning matters here; at 1 miles (US 287 / Federal Boulevard): Lane positioning matters here; at 5 miles (US 36 / Denver–Boulder Turnpike): Highway fork - watch signs carefully. Lane positioning matters here.
About the Cities
Starting in Westminster, CO
Full guide →Westminster is a city of about 115,000 in the Denver Metropolitan Area of the western U.S. state of Colorado. The city lies northwest of Denver in Adams and Jefferson counties.
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: 20.2 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 (86%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 17.3 miles on Denver–Boulder Turnpike. The full list of main roads is in the Roads section above.
Expect about $1.21 in tolls one way, starting with Denver–Boulder Turnpike. Most Northeast and Midwest toll agencies accept E-ZPass; in the West and Texas, transponders like TxTag or FasTrak apply. If you do not have a transponder, cashless tolling plates will mail a bill to the vehicle's registered address — usually with a surcharge, so a rental-car toll pass is often cheaper than paying by mail.
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 Boulder, 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 0.3 miles (Lowell Boulevard): Lane positioning matters here; at 1 miles (US 287 / Federal Boulevard): Lane positioning matters here; at 5 miles (US 36 / Denver–Boulder Turnpike): 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 Boulder, 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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