How far is Longmont, CO from Erie, CO?
The driving distance from Longmont, CO to Erie, CO is about 10.9 miles (17.6 km), with a travel time of about 00h 19m by car.
- The straight-line flight distance is about 8.5 miles (13.7 km).
- For a round trip, plan for roughly 00h 38m 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 19m.
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.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Driving Route Map
The map below follows the saved road route between Longmont and Erie.
Turn-by-Turn Driving Directions
Step-by-step road directions between Longmont and Erie.
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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
7.8 mi · 12 min · Main Street
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4
Turn left onto Jasper Road
2 mi · 4 min · Jasper Road
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5
Enter the roundabout and take exit 1 toward Jay Road
8 m · 1 sec · Jay Road
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6
Exit the roundabout onto Jay Road
931 ft · 28 sec · Jay Road
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7
Turn right
57 m · 11 sec
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8
At the end of the road, turn right onto Jay Road
2525 ft · 1 min · Jay Road
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9
Continue on Cheesman Street
1480 ft · 1 min · Cheesman Street
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10
Turn right onto Holbrook Street
142 m · 28 sec · Holbrook Street
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11
Turn left onto Wells Street
19 m · 3 sec · Wells Street
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12
Arrive at your destination
0 m · 1 sec · Wells Street
Car Route Details
A richer read on the saved driving route between Longmont and Erie.
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.
Main Street
Turn left onto Main Street
7.8 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.
Sunny leaving Longmont and Sunny near Erie.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Longmont to Erie?
The road trip is about 10.9 miles (17.6 km) and usually takes 00h 19m 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?
Niwot is a useful midpoint, sitting about 5.5 miles from Longmont and 5.5 miles from Erie.
How much longer is the road route than the straight-line distance?
The direct path is about 8.5 miles (13.7 km), while the road route adds roughly 2.4 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 7:52 PM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $1.44 one way or $2.88 round trip. Estimated CO2 is about 3.5 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Longmont and Sunny near Erie.
Stop Ideas Near Niwot
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Old Town Hall
Broomfield City Council
Lafayette City Hall
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Niwot.
Longmont, Colorado
Boulder, Colorado
Denver (Bus Station), Colorado
Union Station
Flight Path Map
This map shows the direct air route between Longmont and Erie. Straight-line distance: 8.53 mi (13.73 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 Erie
Town in Boulder County, Colorado, USA
| Population | 30,318 |
| Coordinates | 40.0502600, -105.0499800 |
| Altitude | 1532 |
| Country | United States |
End: Erie (-105.04998, 40.05026)
Estimated Travel Time
Distance: 18 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 21m |
| 40 mph (64.37 km/h) | 00h 16m |
| 50 mph (80.47 km/h) | 00h 13m |
| 60 mph (96.56 km/h) | 00h 10m |
| 70 mph (112.65 km/h) | 00h 09m |
| 80 mph (129 km/h) | 00h 08m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.70 | $1.44 | $2.88 |
| Mid-grade | $4.08 | $1.59 | $3.19 |
| Premium | $4.39 | $1.71 | $3.42 |
| Diesel | $4.74 | $1.85 | $3.69 |
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.