How far is Thornton, CO from Lone Tree, CO?
The driving distance from Thornton, CO to Lone Tree, CO is about 27.4 miles (44.1 km), with a travel time of about 00h 39m by car.
- The straight-line flight distance is about 22.3 miles (35.9 km).
- For a round trip, plan for roughly 01h 18m 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 39m.
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.
The twentieth most populous city in the United States and the center of the Denver metropolitan area.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Thornton and Lone Tree.
Turn-by-Turn Driving Directions
Step-by-step road directions between Thornton and Lone Tree.
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1
Start on the route
23 m · 12 sec
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2
Turn left onto Dorothy Boulevard
1165 ft · 59 sec · Dorothy Boulevard
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3
At the end of the road, turn left onto Thornton Parkway
1.6 km · 2 min · Thornton Parkway
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4
Turn left onto I 25 South: Colorado Springs
1973 ft · 40 sec
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5
Merge slight left onto North Valley Highway
1.2 mi · 2 min · North Valley Highway
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6
Keep slight right to continue on North Valley Highway
22.9 mi · 29 min · North Valley Highway
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7
Take the exit slight right toward County Line Road
1132 ft · 27 sec
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8
Turn slight right onto West County Line Road
881 ft · 22 sec
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9
Turn straight onto East County Line Road
1217 ft · 30 sec · East County Line Road
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10
Turn left onto Chester Street
1085 ft · 37 sec · Chester Street
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11
At the end of the road, turn left onto South Yosemite Street
1.4 km · 2 min · South Yosemite Street
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12
Turn sharp right
50 m · 13 sec
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13
Turn left
105 m · 16 sec
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14
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Thornton and Lone Tree.
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.
North Valley Highway
Keep slight right to continue on North Valley Highway
22.9 mi · 00h 29m
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 Thornton and Mostly Sunny near Lone Tree.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Thornton to Lone Tree?
The road trip is about 27.4 miles (44.1 km) and usually takes 00h 39m 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?
Denver is a useful midpoint, sitting about 13.7 miles from Thornton and 13.7 miles from Lone Tree.
How much longer is the road route than the straight-line distance?
The direct path is about 22.3 miles (35.9 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 7:12 PM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $3.59 one way or $7.17 round trip. Estimated CO2 is about 8.6 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Thornton and Mostly Sunny near Lone Tree.
Stop Ideas Near Denver
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Fairplay Park
Denver City Council
Town Hall Arts Center
Municipal Court Park
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Denver.
Denver (Bus Station), Colorado
Union Station
Boulder, Colorado
Pine Junction, CO
Flight Path Map
This map shows the direct air route between Thornton and Lone Tree. Straight-line distance: 22.33 mi (35.93 km).
#1 Thornton
The seventh most populous city in Colorado.
| Population | 148,113 |
| Coordinates | 39.8680400, -104.9719200 |
| Altitude | 1631 |
| Country | United States |
#2 Lone Tree
City in Douglas County, Colorado, United States of America
| Population | 13,614 |
| Coordinates | 39.5517100, -104.8863000 |
| Altitude | 1813 |
| Country | United States |
End: Lone Tree (-104.8863, 39.55171)
Estimated Travel Time
Distance: 44 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 54m |
| 40 mph (64.37 km/h) | 00h 41m |
| 50 mph (80.47 km/h) | 00h 32m |
| 60 mph (96.56 km/h) | 00h 27m |
| 70 mph (112.65 km/h) | 00h 23m |
| 80 mph (129 km/h) | 00h 20m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.70 | $3.59 | $7.17 |
| Mid-grade | $4.08 | $3.96 | $7.92 |
| Premium | $4.39 | $4.26 | $8.52 |
| Diesel | $4.74 | $4.59 | $9.19 |
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.