How far is Longmont, CO from Denver, CO?
The driving distance from Longmont, CO to Denver, CO is about 36.7 miles (59 km), with a travel time of about 00h 45m by car.
- The straight-line flight distance is about 30.2 miles (48.6 km).
- For a round trip, plan for roughly 01h 31m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM MDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
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 45m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
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
Driving Route Map
The map below follows the saved road route between Longmont and Denver.
Turn-by-Turn Driving Directions
Step-by-step road directions between Longmont and Denver.
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1
Start on the route
19 m · 7 sec
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2
Turn right onto 5th Avenue
1025 ft · 47 sec · 5th Avenue
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3
Turn right onto Collyer Street
1255 ft · 42 sec · Collyer Street
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4
Turn left onto 3rd Avenue
1.8 mi · 3 min · 3rd Avenue
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5
Turn left onto East Ken Pratt Boulevard
1.6 mi · 2 min · East Ken Pratt Boulevard
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6
Continue on Highway 119
3 mi · 4 min · Highway 119
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7
Take the exit right toward I 25 South
2690 ft · 1 min · West I 25 Frontage Road
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8
Merge slight left onto Dwight D. Eisenhower Highway
11.9 mi · 12 min · Dwight D. Eisenhower Highway
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9
Continue on North Valley Highway
3187 ft · 36 sec · North Valley Highway
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10
Keep slight right to continue on North Valley Highway
8.8 mi · 11 min · North Valley Highway
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11
Keep slight right to continue on North Valley Highway
4.8 mi · 7 min · North Valley Highway
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12
Take the exit slight right toward 38th Avenue, Park Avenue, Downtown
1348 ft · 29 sec
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13
Keep slight left to continue on Park Avenue, Downtown
528 ft · 11 sec
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14
Continue on Park Avenue
3279 ft · 1 min · Park Avenue
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15
Turn straight onto Park Avenue West
2615 ft · 1 min · Park Avenue West
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16
Continue on West 22nd Street
2095 ft · 1 min · West 22nd Street
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17
Turn right onto North Broadway
1.6 km · 3 min · North Broadway
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18
Turn left onto East 14th Avenue
709 ft · 30 sec · East 14th Avenue
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19
Turn left
109 m · 28 sec
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20
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Longmont and Denver.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Dwight D. Eisenhower Highway
Merge slight left onto Dwight D. Eisenhower Highway
11.9 mi · 00h 12m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Sunny leaving Longmont and Mostly Sunny near Denver.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Longmont to Denver?
The road trip is about 36.7 miles (59 km) and usually takes 00h 45m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Erie is a useful midpoint, sitting about 18.3 miles from Longmont and 18.3 miles from Denver.
How much longer is the road route than the straight-line distance?
The direct path is about 30.2 miles (48.6 km), while the road route adds roughly 6.5 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 8:00 AM to 10:00 AM MDT. If you want a more comfortable same-day return, try to leave by 4:58 PM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $4.77 one way or $9.54 round trip. Estimated CO2 is about 11.5 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Longmont and Mostly Sunny near Denver.
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 Longmont and Denver. Straight-line distance: 30.22 mi (48.64 km).
#1 Longmont
The most populous city in Boulder County, Colorado.
| Population | 98,445 |
| Coordinates | 40.1672100, -105.1019300 |
| Altitude | 1519 |
| Country | United States |
#2 Denver
The twentieth most populous city in the United States and the center of the Denver metropolitan area.
| Population | 735,538 |
| Coordinates | 39.7391500, -104.9847000 |
| Altitude | 1609 |
| Country | United States |
End: (-104.984198, 39.739139)
Estimated Travel Time
Distance: 59 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 13m |
| 40 mph (64.37 km/h) | 00h 54m |
| 50 mph (80.47 km/h) | 00h 43m |
| 60 mph (96.56 km/h) | 00h 36m |
| 70 mph (112.65 km/h) | 00h 31m |
| 80 mph (129 km/h) | 00h 27m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.70 | $4.77 | $9.54 |
| Mid-grade | $4.08 | $5.27 | $10.54 |
| Premium | $4.39 | $5.66 | $11.33 |
| Diesel | $4.74 | $6.11 | $12.22 |
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.