How far is Highlands Ranch, CO from Longmont, CO?
The driving distance from Highlands Ranch, CO to Longmont, CO is about 72.5 miles (116.6 km), with a travel time of about 01h 12m by car.
- The straight-line flight distance is about 42.9 miles (69.1 km).
- For a round trip, plan for roughly 02h 25m 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 12m.
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.
City in Colorado
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny
Sunny
Driving Route Map
The map below follows the saved road route between Highlands Ranch and Longmont.
Turn-by-Turn Driving Directions
Step-by-step road directions between Highlands Ranch and Longmont.
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1
Start on South Wild Iris Run
107 m · 19 sec · South Wild Iris Run
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2
Turn right onto East Thistle Ridge Road
1551 ft · 1 min · East Thistle Ridge Road
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3
Turn left onto Venneford Ranch Road
2752 ft · 1 min · Venneford Ranch Road
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4
Turn left onto South University Boulevard
9.2 mi · 17 min · South University Boulevard
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5
Take the ramp slight left
1793 ft · 46 sec
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6
Merge slight left onto South Valley Highway
12.7 mi · 17 min · South Valley Highway
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7
Keep slight right to continue on North Valley Highway
4.3 mi · 6 min · North Valley Highway
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8
Keep slight right to continue on North Valley Highway
5.3 mi · 6 min · North Valley Highway
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9
Continue on Dwight D. Eisenhower Highway
12.2 mi · 12 min · Dwight D. Eisenhower Highway
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10
Take the exit slight right toward CO 119 West: Firestone Boulevard
996 ft · 19 sec
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11
Keep slight left to continue on CO 119 West: Longmont
88 m · 8 sec
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12
Turn left onto Highway 119
3.1 mi · 4 min · Highway 119
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13
Continue on East Ken Pratt Boulevard
1.6 mi · 2 min · East Ken Pratt Boulevard
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14
Take the exit slight right
69 m · 7 sec
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15
Turn right onto East 3rd Avenue
1.9 mi · 4 min · East 3rd Avenue
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16
Turn right onto Kimbark Street
1084 ft · 55 sec · Kimbark Street
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17
Turn left
57 m · 16 sec
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18
Turn right
33 m · 8 sec
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19
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Highlands Ranch and Longmont.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
South Valley Highway
Merge slight left onto South Valley Highway
12.7 mi · 00h 17m
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 Highlands Ranch and Sunny near Longmont.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Highlands Ranch to Longmont?
The road trip is about 72.5 miles (116.6 km) and usually takes 01h 12m 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?
Northglenn is a useful midpoint, sitting about 26.1 miles from Highlands Ranch and 46.4 miles from Longmont.
How much longer is the road route than the straight-line distance?
The direct path is about 42.9 miles (69.1 km), while the road route adds roughly 29.6 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 4:04 PM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $9.47 one way or $18.93 round trip. Estimated CO2 is about 22.8 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Highlands Ranch and Sunny near Longmont.
Stop Ideas Near Northglenn
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Fairplay Park
Denver City Council
Lafayette City Hall
Municipal Court Park
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Northglenn.
Denver (Bus Station), Colorado
Union Station
Boulder, Colorado
Longmont, Colorado
Flight Path Map
This map shows the direct air route between Highlands Ranch and Longmont. Straight-line distance: 42.96 mi (69.13 km).
#1 Highlands Ranch
Census designated place
| Population | 96,713 |
| Coordinates | 39.5538800, -104.9694300 |
| Altitude | 1732 |
| 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: 117 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 24m |
| 40 mph (64.37 km/h) | 01h 48m |
| 50 mph (80.47 km/h) | 01h 26m |
| 60 mph (96.56 km/h) | 01h 12m |
| 70 mph (112.65 km/h) | 01h 02m |
| 80 mph (129 km/h) | 00h 54m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.70 | $9.47 | $18.93 |
| Mid-grade | $4.08 | $10.46 | $20.91 |
| Premium | $4.39 | $11.24 | $22.48 |
| Diesel | $4.74 | $12.13 | $24.25 |
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.