How far is Commerce City, CO from Longmont, CO?
The driving distance from Commerce City, CO to Longmont, CO is about 33.9 miles (54.5 km), with a travel time of about 00h 40m by car.
- The straight-line flight distance is about 26.3 miles (42.4 km).
- For a round trip, plan for roughly 01h 20m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM MDT.
Reverse, save, or send this route
This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 00h 40m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Town in Boulder County, Colorado, USA
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny then Slight Chance Rain Showers
Mostly Sunny then Slight Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Commerce City and Longmont.
Turn-by-Turn Driving Directions
Step-by-step road directions between Commerce City and Longmont.
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1
Start on the route
732 ft · 56 sec
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2
At the end of the road, turn right onto Dexter Street
722 ft · 34 sec · Dexter Street
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3
Turn right
45 m · 16 sec
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4
Turn left
29 m · 12 sec
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5
At the end of the road, turn left onto East 60th Avenue
61 m · 15 sec · East 60th Avenue
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6
Turn right onto North Vasquez Boulevard
825 ft · 11 sec · North Vasquez Boulevard
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7
Take the exit slight right toward I 270 West: Boulder
1503 ft · 39 sec
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8
Merge slight left onto Dwight D. Eisenhower Highway
2.9 mi · 4 min · Dwight D. Eisenhower Highway
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9
Take the exit slight right toward I 25 North: Fort Collins
1690 ft · 41 sec
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10
Merge slight left onto North Valley Highway
1.3 km · 1 min · North Valley Highway
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11
Keep slight right to continue on North Valley Highway
4.3 mi · 6 min · North Valley Highway
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12
Keep slight right to continue on North Valley Highway
5.3 mi · 6 min · North Valley Highway
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13
Continue on Dwight D. Eisenhower Highway
12.2 mi · 12 min · Dwight D. Eisenhower Highway
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14
Take the exit slight right toward CO 119 West: Firestone Boulevard
996 ft · 19 sec
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15
Keep slight left to continue on CO 119 West: Longmont
88 m · 8 sec
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16
Turn left onto Highway 119
3.1 mi · 4 min · Highway 119
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17
Continue on East Ken Pratt Boulevard
1.6 mi · 2 min · East Ken Pratt Boulevard
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18
Take the exit slight right
69 m · 7 sec
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19
Turn right onto East 3rd Avenue
1.9 mi · 4 min · East 3rd Avenue
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20
Turn right onto Kimbark Street
1084 ft · 55 sec · Kimbark Street
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21
Turn left
57 m · 16 sec
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22
Turn right
33 m · 8 sec
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23
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Commerce City and Longmont.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
Dwight D. Eisenhower Highway
Continue on Dwight D. Eisenhower Highway
12.2 mi · 00h 12m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Mostly Sunny then Slight Chance Rain Showers leaving Commerce City and Mostly Sunny then Slight Chance Rain Showers near Longmont.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Commerce City to Longmont?
The road trip is about 33.9 miles (54.5 km) and usually takes 00h 40m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
Erie is a useful midpoint, sitting about 17 miles from Commerce City and 16.9 miles from Longmont.
How much longer is the road route than the straight-line distance?
The direct path is about 26.3 miles (42.4 km), while the road route adds roughly 7.6 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 7:00 AM to 7:00 PM MDT. If you want a more comfortable same-day return, try to leave by 7:10 PM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $4.40 one way or $8.80 round trip. Estimated CO2 is about 10.6 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny then Slight Chance Rain Showers around Commerce City and Mostly Sunny then Slight Chance Rain Showers near Longmont.
Stop Ideas Near Erie
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Municipal Court Park
Broomfield City Council
Lafayette City Hall
Historic Brighton City Hall
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Erie.
Longmont, Colorado
Boulder, Colorado
Union Station
Denver (Bus Station), Colorado
Flight Path Map
This map shows the direct air route between Commerce City and Longmont. Straight-line distance: 26.35 mi (42.4 km).
#1 Commerce City
The most populous city in Adams County, Colorado.
| Population | 60,336 |
| Coordinates | 39.8083200, -104.9338700 |
| Altitude | 1572 |
| Country | United States |
#2 Longmont
The most populous city in Boulder County, Colorado.
| Population | 98,445 |
| Coordinates | 40.1672100, -105.1019300 |
| Altitude | 1519 |
| Country | United States |
End: (-105.101861, 40.16721)
Estimated Travel Time
Distance: 55 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 07m |
| 40 mph (64.37 km/h) | 00h 50m |
| 50 mph (80.47 km/h) | 00h 40m |
| 60 mph (96.56 km/h) | 00h 33m |
| 70 mph (112.65 km/h) | 00h 29m |
| 80 mph (129 km/h) | 00h 25m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.70 | $4.40 | $8.80 |
| Mid-grade | $4.08 | $4.86 | $9.72 |
| Premium | $4.39 | $5.23 | $10.45 |
| Diesel | $4.74 | $5.64 | $11.27 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in Colorado · Apr 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.