How far is Denver, CO from Longmont, CO?
The driving distance from Denver, CO to Longmont, 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 30m 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 45m.
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 Denver and Longmont.
Turn-by-Turn Driving Directions
Step-by-step road directions between Denver and Longmont.
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1
Start on the route
115 m · 29 sec
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2
Turn right
19 m · 12 sec
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3
Turn left onto East Colfax Avenue
110 m · 14 sec · East Colfax Avenue
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4
Turn right onto North Lincoln Street
2848 ft · 2 min · North Lincoln Street
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5
Continue on 20th Street
153 m · 18 sec · 20th Street
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6
Turn right onto North Broadway
2045 ft · 1 min · North Broadway
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7
Turn left onto Park Avenue West
1.6 km · 3 min · Park Avenue West
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8
Take the ramp slight right toward I 25 North, I 70: Fort Collins, Limon, Grand Junction
140 m · 11 sec
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9
Keep slight left to continue on I 25 North: Fort Collins
1699 ft · 23 sec
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10
Merge slight right onto North Valley Highway
5 mi · 7 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 Denver and Longmont.
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
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 Denver 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 Denver to Longmont?
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 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 18.3 miles from Denver and 18.3 miles from Longmont.
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 7:00 AM to 7:00 PM MDT. If you want a more comfortable same-day return, try to leave by 7:00 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 Mostly Sunny then Slight Chance Rain Showers around Denver 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 Denver and Longmont. Straight-line distance: 30.22 mi (48.64 km).
#1 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 |
#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: 59 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 13m |
| 40 mph (64.37 km/h) | 00h 55m |
| 50 mph (80.47 km/h) | 00h 44m |
| 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.