How far is Glenwood Springs, CO from Thornton, CO?
The driving distance from Glenwood Springs, CO to Thornton, CO is about 164 miles (264 km), with a travel time of about 02h 47m by car.
- The straight-line flight distance is about 126.9 miles (204.3 km).
- For a round trip, plan for roughly 05h 34m 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 02h 47m.
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 Summit County, Colorado, United States of America
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 Glenwood Springs and Thornton.
Turn-by-Turn Driving Directions
Step-by-step road directions between Glenwood Springs and Thornton.
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1
Start on Pine Street
37 m · 7 sec · Pine Street
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2
Turn right onto West 6th Street
581 ft · 20 sec · West 6th Street
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3
Enter the roundabout and take exit 3 toward Laurel Street
44 m · 3 sec · Laurel Street
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4
Exit the roundabout onto Laurel Street
136 m · 24 sec · Laurel Street
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5
Take the exit left
824 ft · 20 sec
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6
Merge slight left onto Grand Army of the Republic Highway
13.1 mi · 17 min · Grand Army of the Republic Highway
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7
Continue on Pearl Harbor Memorial Highway
1.2 mi · 2 min · Pearl Harbor Memorial Highway
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8
Continue on Gerald R. Ford Memorial Highway
60.9 mi · 1 hr 5 min · Gerald R. Ford Memorial Highway
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9
Continue on Grand Army of the Republic Highway
78 mi · 1 hr 33 min · Grand Army of the Republic Highway
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10
Keep slight left to continue on Heartland Expressway
5.1 mi · 6 min · Heartland Expressway
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11
Take the exit slight right toward I 25: Fort Collins, Colorado Springs
1098 ft · 21 sec
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12
Keep slight left to continue on I 25 North: Fort Collins
1.4 mi · 3 min
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13
Merge slight left onto North Valley Highway
1.4 km · 1 min · North Valley Highway
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14
Keep slight right to continue on North Valley Highway
1.3 mi · 2 min · North Valley Highway
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15
Take the exit slight right toward Thornton Parkway
2280 ft · 43 sec
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16
Turn right onto Thornton Parkway
1.4 km · 2 min · Thornton Parkway
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17
Turn right onto Dorothy Boulevard
1077 ft · 51 sec · Dorothy Boulevard
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18
Turn right
36 m · 9 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 Glenwood Springs and Thornton.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Grand Army of the Republic Highway
Continue on Grand Army of the Republic Highway
78 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 Glenwood Springs and Sunny near Thornton.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Glenwood Springs to Thornton?
The road trip is about 164 miles (264 km) and usually takes 02h 47m 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?
Frisco is a useful midpoint, sitting about 82 miles from Glenwood Springs and 82.1 miles from Thornton.
How much longer is the road route than the straight-line distance?
The direct path is about 126.9 miles (204.3 km), while the road route adds roughly 37.1 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 8:00 AM to 10:00 AM MDT. If you want a more comfortable same-day return, try to leave by 12:56 PM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $21.41 one way or $42.82 round trip. Estimated CO2 is about 51.5 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Glenwood Springs and Sunny near Thornton.
Stop Ideas Near Frisco
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 Frisco.
Frisco, Colorado
Vail, Colorado
Fairplay, CO
Fraser – Winter Park
Flight Path Map
This map shows the direct air route between Glenwood Springs and Thornton. Straight-line distance: 126.96 mi (204.33 km).
#1 Glenwood Springs
City in Colorado
| Population | 10,222 |
| Coordinates | 39.5505400, -107.3247800 |
| Altitude | 1756 |
| Country | United States |
#2 Thornton
The seventh most populous city in Colorado.
| Population | 148,113 |
| Coordinates | 39.8680400, -104.9719200 |
| Altitude | 1631 |
| Country | United States |
End: (-104.971859, 39.868064)
Estimated Travel Time
Distance: 264 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 05h 28m |
| 40 mph (64.37 km/h) | 04h 06m |
| 50 mph (80.47 km/h) | 03h 16m |
| 60 mph (96.56 km/h) | 02h 44m |
| 70 mph (112.65 km/h) | 02h 20m |
| 80 mph (129 km/h) | 02h 02m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.70 | $21.41 | $42.82 |
| Mid-grade | $4.08 | $23.65 | $47.29 |
| Premium | $4.39 | $25.42 | $50.85 |
| Diesel | $4.74 | $27.43 | $54.85 |
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.