How far is Thornton, CO from Greeley, CO?
The driving distance from Thornton, CO to Greeley, CO is about 54.1 miles (87.1 km), with a travel time of about 00h 59m by car.
- The straight-line flight distance is about 40.8 miles (65.7 km).
- For a round trip, plan for roughly 01h 59m 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 00h 59m.
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 Weld County, Colorado, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny then Slight Chance Rain Showers
Mostly Sunny then Slight Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Thornton and Greeley.
Turn-by-Turn Driving Directions
Step-by-step road directions between Thornton and Greeley.
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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
1755 ft · 44 sec · Thornton Parkway
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4
Turn right onto Washington Street
1.6 km · 2 min · Washington Street
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5
Turn left onto East 104th Avenue
2512 ft · 57 sec · East 104th Avenue
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6
Take the ramp slight right toward I 25 North
1401 ft · 26 sec
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7
Merge slight left onto North Valley Highway
1.1 mi · 1 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
29.2 mi · 29 min · Dwight D. Eisenhower Highway
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10
Take the exit slight right toward US 34: Loveland, Greeley
1700 ft · 41 sec
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11
Keep slight right to continue on US 34 East: Greeley
148 m · 12 sec
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12
Merge slight left onto East Eisenhower Boulevard
1.3 km · 1 min · East Eisenhower Boulevard
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13
Continue on East Highway 34
4.6 mi · 7 min · East Highway 34
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14
Turn slight right onto 10th Street
9.8 mi · 16 min · 10th Street
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15
Turn left onto 18th Avenue
153 m · 29 sec · 18th Avenue
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16
Turn left onto 9th Street
115 m · 12 sec · 9th Street
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17
Turn left onto 19th Avenue
80 m · 12 sec · 19th Avenue
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18
Arrive at your destination
0 m · 1 sec · 19th Avenue
Car Route Details
A richer read on the saved driving route between Thornton and Greeley.
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
Continue on Dwight D. Eisenhower Highway
29.2 mi · 00h 29m
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.
Mostly Sunny then Slight Chance Rain Showers leaving Thornton and Mostly Sunny then Slight Chance Rain Showers near Greeley.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Thornton to Greeley?
The road trip is about 54.1 miles (87.1 km) and usually takes 00h 59m 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?
Mead is a useful midpoint, sitting about 26.9 miles from Thornton and 27.2 miles from Greeley.
How much longer is the road route than the straight-line distance?
The direct path is about 40.8 miles (65.7 km), while the road route adds roughly 13.3 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 4:30 PM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $7.06 one way or $14.13 round trip. Estimated CO2 is about 17 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny then Slight Chance Rain Showers around Thornton and Mostly Sunny then Slight Chance Rain Showers near Greeley.
Stop Ideas Near Mead
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 Mead.
Longmont, Colorado
Boulder, Colorado
Fort Collins, Colorado
Union Station
Flight Path Map
This map shows the direct air route between Thornton and Greeley. Straight-line distance: 40.8 mi (65.66 km).
#1 Thornton
The seventh most populous city in Colorado.
| Population | 148,113 |
| Coordinates | 39.8680400, -104.9719200 |
| Altitude | 1631 |
| Country | United States |
#2 Greeley
The third most populous city in Weld County, Colorado.
| Population | 108,958 |
| Coordinates | 40.4233100, -104.7091300 |
| Altitude | 1425 |
| Country | United States |
End: 19th Avenue (-104.709131, 40.42331)
Estimated Travel Time
Distance: 87 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 48m |
| 40 mph (64.37 km/h) | 01h 21m |
| 50 mph (80.47 km/h) | 01h 04m |
| 60 mph (96.56 km/h) | 00h 54m |
| 70 mph (112.65 km/h) | 00h 46m |
| 80 mph (129 km/h) | 00h 40m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.70 | $7.06 | $14.13 |
| Mid-grade | $4.08 | $7.80 | $15.60 |
| Premium | $4.39 | $8.39 | $16.77 |
| Diesel | $4.74 | $9.05 | $18.10 |
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.