How far is Eaton, CO from Thornton, CO?
The driving distance from Eaton, CO to Thornton, CO is about 62.8 miles (101.1 km), with a travel time of about 01h 08m by car.
- The straight-line flight distance is about 47.8 miles (76.9 km).
- For a round trip, plan for roughly 02h 17m 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 08m.
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.
Municipality in Colorado, USA
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 Eaton and Thornton.
Turn-by-Turn Driving Directions
Step-by-step road directions between Eaton and Thornton.
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1
Start on Oak Avenue
151 m · 15 sec · Oak Avenue
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2
Continue on Oak Avenue
2602 ft · 1 min · Oak Avenue
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3
Turn right onto Collins Street
1.3 mi · 3 min · Collins Street
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4
Enter the roundabout and take exit 2 toward Fall Line Road
37 m · 2 sec · County Road 74
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5
Exit the rotary onto County Road 74
1 mi · 1 min · County Road 74
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6
Enter the roundabout and take exit 2 toward County Road 74
40 m · 2 sec · County Road 74
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7
Exit the roundabout onto County Road 74
3.1 mi · 4 min · County Road 74
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8
Continue on East Harmony Road
1.7 mi · 3 min · East Harmony Road
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9
Continue on East 4th Avenue
3128 ft · 2 min · East 4th Avenue
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10
Continue on East Harmony Road
1 mi · 2 min · East Harmony Road
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11
Continue on County Road 74
2.2 mi · 4 min · County Road 74
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12
Continue on Harmony Road
4 mi · 7 min · Harmony Road
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13
Turn left onto I 25 South
1417 ft · 35 sec
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14
Merge slight left onto Dwight D. Eisenhower Highway
37.3 mi · 37 min · Dwight D. Eisenhower Highway
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15
Continue on North Valley Highway
3187 ft · 36 sec · North Valley Highway
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16
Keep slight right to continue on North Valley Highway
7 mi · 8 min · North Valley Highway
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17
Take the exit slight right toward Thornton Parkway
1181 ft · 23 sec
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18
Keep slight left to continue on Thornton Parkway East
35 m · 5 sec
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19
Turn left onto Thornton Parkway
1.6 km · 2 min · Thornton Parkway
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20
Turn right onto Dorothy Boulevard
1077 ft · 51 sec · Dorothy Boulevard
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21
Turn right
36 m · 9 sec
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22
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Eaton 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.
Dwight D. Eisenhower Highway
Merge slight left onto Dwight D. Eisenhower Highway
37.3 mi · 00h 37m
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 Eaton and Sunny near Thornton.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Eaton to Thornton?
The road trip is about 62.8 miles (101.1 km) and usually takes 01h 08m 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?
Johnstown is a useful midpoint, sitting about 31.1 miles from Eaton and 31.6 miles from Thornton.
How much longer is the road route than the straight-line distance?
The direct path is about 47.8 miles (76.9 km), while the road route adds roughly 15 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 4:12 PM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $8.21 one way or $16.42 round trip. Estimated CO2 is about 19.7 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Eaton and Sunny near Thornton.
Stop Ideas Near Johnstown
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Old Town Hall
Town of Frederick
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Johnstown.
Longmont, Colorado
Fort Collins, Colorado
Boulder, Colorado
Union Station
Flight Path Map
This map shows the direct air route between Eaton and Thornton. Straight-line distance: 47.78 mi (76.89 km).
#1 Eaton
Human settlement in Weld County, Colorado, United States of America
| Population | 6,000 |
| Coordinates | 40.5302600, -104.7113500 |
| Altitude | 1475 |
| 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: 101 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 05m |
| 40 mph (64.37 km/h) | 01h 34m |
| 50 mph (80.47 km/h) | 01h 15m |
| 60 mph (96.56 km/h) | 01h 02m |
| 70 mph (112.65 km/h) | 00h 53m |
| 80 mph (129 km/h) | 00h 47m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.70 | $8.21 | $16.42 |
| Mid-grade | $4.08 | $9.07 | $18.13 |
| Premium | $4.39 | $9.75 | $19.50 |
| Diesel | $4.74 | $10.52 | $21.03 |
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.