How far is Longmont, CO from Clifton, CO?
The driving distance from Longmont, CO to Clifton, CO is about 262.9 miles (423.1 km), with a travel time of about 05h 03m by car.
- The straight-line flight distance is about 193 miles (310.6 km).
- For a round trip, plan for roughly 10h 07m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM MDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
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 05h 03m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
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.
Home Rule Municipality that is a town in Eagle County, Colorado, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Rain And Snow
Scattered Snow Showers
Driving Route Map
The map below follows the saved road route between Longmont and Clifton.
Turn-by-Turn Driving Directions
Step-by-step road directions between Longmont and Clifton.
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1
Start on the route
19 m · 10 sec
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2
Turn left onto 5th Avenue
53 m · 10 sec · 5th Avenue
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3
Turn left onto Main Street
17.3 mi · 25 min · Main Street
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4
Continue straight
2797 ft · 1 min
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5
Turn left onto US 36 East: Denver
1737 ft · 44 sec
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6
Merge slight left onto Denver–Boulder Turnpike
1.2 mi · 1 min · Denver–Boulder Turnpike
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7
Keep slight right to continue on Denver–Boulder Turnpike
1.9 mi · 2 min · Denver–Boulder Turnpike
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8
Keep slight right to continue on Denver–Boulder Turnpike
1.2 km · 53 sec · Denver–Boulder Turnpike
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9
Take the exit slight right toward CO 95 South: Sheridan Boulevard
1708 ft · 37 sec
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10
Turn right onto Sheridan Boulevard
4.3 mi · 7 min · Sheridan Boulevard
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11
Take the ramp slight right toward I 76 West
1712 ft · 44 sec
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12
Merge slight left onto Heartland Expressway
1.3 mi · 2 min · Heartland Expressway
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13
Merge slight left
232.9 mi · 4 hr 18 min
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14
Take the exit slight right toward I 70 Business, US 6, US 50: Clifton, Grand Junction, Delta
1.4 mi · 3 min
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15
Turn sharp left onto F Road
952 ft · 34 sec · F Road
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16
Enter the roundabout and take exit 2 toward F Road
23 m · 1 sec · F Road
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17
Exit the roundabout onto F Road
110 m · 10 sec · F Road
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18
Arrive at your destination
0 m · 1 sec · F Road
Car Route Details
A richer read on the saved driving route between Longmont and Clifton.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Heartland Expressway
Merge slight left
233 mi · 04h 18m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Rain And Snow leaving Longmont and Scattered Snow Showers near Clifton.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Longmont to Clifton?
The road trip is about 262.9 miles (423.1 km) and usually takes 05h 03m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Avon is a useful midpoint, sitting about 131.4 miles from Longmont and 131.6 miles from Clifton.
How much longer is the road route than the straight-line distance?
The direct path is about 193 miles (310.6 km), while the road route adds roughly 69.9 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 6:00 AM to 8:00 AM MDT. If you want a more comfortable same-day return, try to leave by 6:52 AM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $34.32 one way or $68.63 round trip. Estimated CO2 is about 82.5 kg one way.
What should you check before leaving?
Before you leave, expect Rain And Snow around Longmont and Scattered Snow Showers near Clifton.
Stop Ideas Near Avon
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Avon.
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Glenwood Springs
Flight Path Map
This map shows the direct air route between Longmont and Clifton. Straight-line distance: 192.97 mi (310.55 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 Clifton
Clifton is a place in Colorado, United States.
| Population | 0 |
| Coordinates | 39.0919300, -108.4489800 |
| Altitude | 1440 |
| Country | United States |
End: Clifton (-108.44898, 39.09193)
Estimated Travel Time
Distance: 423 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 08h 45m |
| 40 mph (64.37 km/h) | 06h 34m |
| 50 mph (80.47 km/h) | 05h 15m |
| 60 mph (96.56 km/h) | 04h 22m |
| 70 mph (112.65 km/h) | 03h 45m |
| 80 mph (129 km/h) | 03h 16m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.70 | $34.32 | $68.63 |
| Mid-grade | $4.08 | $37.90 | $75.80 |
| Premium | $4.39 | $40.75 | $81.50 |
| Diesel | $4.74 | $43.96 | $87.92 |
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 18, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.