How far is Frederick, CO from Longmont, CO?
The driving distance from Frederick, CO to Longmont, CO is about 15 miles (24.2 km), with a travel time of about 00h 22m by car.
- The straight-line flight distance is about 9.9 miles (15.9 km).
- For a round trip, plan for roughly 00h 45m 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 22m.
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.
Human settlement in Weld County, Colorado, United States of America
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Sunny
Driving Route Map
The map below follows the saved road route between Frederick and Longmont.
Turn-by-Turn Driving Directions
Step-by-step road directions between Frederick and Longmont.
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1
Start on the route
53 m · 15 sec
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2
Turn right onto Locust Street
51 m · 10 sec · Locust Street
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3
Turn right onto 5th Street
1552 ft · 1 min · 5th Street
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4
Enter the roundabout and take exit 2 toward Colorado Boulevard
77 m · 11 sec · Colorado Boulevard
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5
Exit the roundabout onto Colorado Boulevard
2651 ft · 51 sec · Colorado Boulevard
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6
Enter the roundabout and take exit 2 toward Colorado Boulevard
54 m · 4 sec · Colorado Boulevard
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7
Exit the roundabout onto Colorado Boulevard
911 ft · 17 sec · Colorado Boulevard
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8
Turn slight right
89 m · 11 sec
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9
Turn straight
1.9 mi · 3 min
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10
Take the ramp slight right toward I 25 North: Fort Collins
1736 ft · 43 sec
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11
Merge slight left onto Dwight D. Eisenhower Highway
4.5 mi · 4 min · Dwight D. Eisenhower Highway
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12
Take the exit slight right toward CO 119 West: Firestone Boulevard
996 ft · 19 sec
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13
Keep slight left to continue on CO 119 West: Longmont
88 m · 8 sec
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14
Turn left onto Highway 119
3.1 mi · 4 min · Highway 119
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15
Continue on East Ken Pratt Boulevard
1.6 mi · 2 min · East Ken Pratt Boulevard
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16
Take the exit slight right
69 m · 7 sec
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17
Turn right onto East 3rd Avenue
1.9 mi · 4 min · East 3rd Avenue
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18
Turn right onto Kimbark Street
1084 ft · 55 sec · Kimbark Street
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19
Turn left
57 m · 16 sec
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20
Turn right
33 m · 8 sec
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21
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Frederick 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
Merge slight left onto Dwight D. Eisenhower Highway
4.49 mi · 00h 04m
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 leaving Frederick and Sunny near Longmont.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Frederick to Longmont?
The road trip is about 15 miles (24.2 km) and usually takes 00h 22m 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?
Firestone is a useful midpoint, sitting about 7.5 miles from Frederick and 7.5 miles from Longmont.
How much longer is the road route than the straight-line distance?
The direct path is about 9.9 miles (15.9 km), while the road route adds roughly 5.1 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 7:44 PM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $1.96 one way or $3.92 round trip. Estimated CO2 is about 4.7 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Frederick and Sunny near Longmont.
Stop Ideas Near Firestone
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Historic Brighton City Hall
Town of Frederick
Lafayette City Hall
Old Town Hall
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Firestone.
Longmont, Colorado
Boulder, Colorado
Union Station
Denver (Bus Station), Colorado
Flight Path Map
This map shows the direct air route between Frederick and Longmont. Straight-line distance: 9.89 mi (15.92 km).
#1 Frederick
Settlement in Weld County, Colorado, United States
| Population | 11,515 |
| Coordinates | 40.0991500, -104.9372000 |
| Altitude | 1519 |
| 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: 24 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 30m |
| 40 mph (64.37 km/h) | 00h 22m |
| 50 mph (80.47 km/h) | 00h 18m |
| 60 mph (96.56 km/h) | 00h 15m |
| 70 mph (112.65 km/h) | 00h 12m |
| 80 mph (129 km/h) | 00h 11m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.70 | $1.96 | $3.92 |
| Mid-grade | $4.08 | $2.16 | $4.33 |
| Premium | $4.39 | $2.33 | $4.65 |
| Diesel | $4.74 | $2.51 | $5.02 |
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.