How far is Sterling, CO from Longmont, CO?
The driving distance from Sterling, CO to Longmont, CO is about 124.9 miles (201 km), with a travel time of about 01h 59m by car.
- The straight-line flight distance is about 104.6 miles (168.3 km).
- For a round trip, plan for roughly 03h 59m 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 01h 59m.
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 Colorado, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny
Driving Route Map
The map below follows the saved road route between Sterling and Longmont.
Turn-by-Turn Driving Directions
Step-by-step road directions between Sterling and Longmont.
-
1
Start on the route
73 m · 23 sec
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2
Turn left onto North 3rd Street
84 m · 11 sec · North 3rd Street
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3
Turn right onto East Chestnut Street
1.4 mi · 3 min · East Chestnut Street
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4
Continue on US Highway 6
1246 ft · 24 sec · US Highway 6
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5
Take the ramp slight right toward I 76 West
1715 ft · 43 sec
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6
Merge slight left
92.7 mi · 1 hr 33 min
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7
Take the exit slight right toward CO 52: Hudson
1129 ft · 27 sec
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8
Enter the roundabout and take exit 1 toward East Bison Highway
7 m · 1 sec · East Bison Highway
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9
Exit the roundabout onto East Bison Highway
1468 ft · 25 sec · East Bison Highway
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10
Enter the roundabout and take exit 2 toward East Bison Highway
41 m · 2 sec · East Bison Highway
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11
Exit the roundabout onto East Bison Highway
8 mi · 13 min · East Bison Highway
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12
Continue on 1st Street
9.7 mi · 17 min · 1st Street
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13
Take the ramp slight right toward I 25 North: Fort Collins
1736 ft · 43 sec
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14
Merge slight left onto Dwight D. Eisenhower Highway
4.5 mi · 4 min · Dwight D. Eisenhower Highway
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15
Take the exit slight right toward CO 119 West: Firestone Boulevard
996 ft · 19 sec
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16
Keep slight left to continue on CO 119 West: Longmont
88 m · 8 sec
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17
Turn left onto Highway 119
3.1 mi · 4 min · Highway 119
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18
Continue on East Ken Pratt Boulevard
1.6 mi · 2 min · East Ken Pratt Boulevard
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19
Take the exit slight right
69 m · 7 sec
-
20
Turn right onto East 3rd Avenue
1.9 mi · 4 min · East 3rd Avenue
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21
Turn right onto Kimbark Street
1084 ft · 55 sec · Kimbark Street
-
22
Turn left
57 m · 16 sec
-
23
Turn right
33 m · 8 sec
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24
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Sterling 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.
I 76 West
Merge slight left
92.7 mi · 01h 33m
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 Sterling and Sunny near Longmont.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Sterling to Longmont?
The road trip is about 124.9 miles (201 km) and usually takes 01h 59m 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?
Wiggins is a useful midpoint, sitting about 62.4 miles from Sterling and 62.5 miles from Longmont.
How much longer is the road route than the straight-line distance?
The direct path is about 104.6 miles (168.3 km), while the road route adds roughly 20.3 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 2:30 PM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $16.31 one way or $32.62 round trip. Estimated CO2 is about 39.2 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Sterling and Sunny near Longmont.
Stop Ideas Near Wiggins
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 Wiggins.
Fort Morgan
Longmont, Colorado
Fort Collins, Colorado
Denver (Bus Station), Colorado
Flight Path Map
This map shows the direct air route between Sterling and Longmont. Straight-line distance: 104.58 mi (168.31 km).
#1 Sterling
City in Colorado
| Population | 14,078 |
| Coordinates | 40.6255400, -103.2077100 |
| Altitude | 1200 |
| 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: 201 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 04h 09m |
| 40 mph (64.37 km/h) | 03h 07m |
| 50 mph (80.47 km/h) | 02h 29m |
| 60 mph (96.56 km/h) | 02h 04m |
| 70 mph (112.65 km/h) | 01h 47m |
| 80 mph (129 km/h) | 01h 33m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.70 | $16.31 | $32.62 |
| Mid-grade | $4.08 | $18.01 | $36.02 |
| Premium | $4.39 | $19.36 | $38.73 |
| Diesel | $4.74 | $20.89 | $41.78 |
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 19, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.