How far is Thornton, CO from Keenesburg, CO?
The driving distance from Thornton, CO to Keenesburg, CO is about 33.4 miles (53.7 km), with a travel time of about 00h 39m by car.
- The straight-line flight distance is about 29.1 miles (46.9 km).
- For a round trip, plan for roughly 01h 19m 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.
This departure sits inside the recommended comfort window for the route.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Town of the United States in Weld County in United States of America
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 Thornton and Keenesburg.
Turn-by-Turn Driving Directions
Step-by-step road directions between Thornton and Keenesburg.
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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 · 55 sec · Dorothy Boulevard
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3
At the end of the road, turn right onto Thornton Parkway
1.7 mi · 3 min · Thornton Parkway
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4
Turn right onto Colorado Boulevard
1.6 km · 2 min · Colorado Boulevard
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5
Turn left onto East 88th Avenue
1.6 mi · 3 min · East 88th Avenue
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6
Take the ramp left toward I 76 East: Brush
1052 ft · 26 sec
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7
Merge slight left onto Heartland Expressway
1.8 mi · 2 min · Heartland Expressway
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8
Keep slight right to continue on Heartland Expressway
26.2 mi · 26 min · Heartland Expressway
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9
Take the exit slight right toward Keenesburg
1575 ft · 38 sec
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10
Turn sharp right onto North Market Street
1594 ft · 50 sec · North Market Street
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11
Turn left onto East Woodward Avenue
122 m · 13 sec · East Woodward Avenue
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12
Turn right onto South Main Street
112 m · 10 sec · South Main Street
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13
Arrive at your destination
0 m · 1 sec · South Main Street
Car Route Details
A richer read on the saved driving route between Thornton and Keenesburg.
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.
Heartland Expressway
Keep slight right to continue on Heartland Expressway
26.2 mi · 00h 26m
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 Sunny near Keenesburg.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Thornton to Keenesburg?
The road trip is about 33.4 miles (53.7 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?
Lochbuie is a useful midpoint, sitting about 16.7 miles from Thornton and 16.7 miles from Keenesburg.
How much longer is the road route than the straight-line distance?
The direct path is about 29.1 miles (46.9 km), while the road route adds roughly 4.3 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 7:00 AM to 7:00 PM MDT. If you want a more comfortable same-day return, try to leave by 7:10 PM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $4.36 one way or $8.73 round trip. Estimated CO2 is about 10.5 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Thornton and Sunny near Keenesburg.
Stop Ideas Near Lochbuie
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Historic Brighton City Hall
Town of Frederick
Town Hall
Old Town Hall
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Lochbuie.
Denver (Bus Station), Colorado
Union Station
Longmont, Colorado
Boulder, Colorado
Flight Path Map
This map shows the direct air route between Thornton and Keenesburg. Straight-line distance: 29.12 mi (46.87 km).
#1 Thornton
The seventh most populous city in Colorado.
| Population | 148,113 |
| Coordinates | 39.8680400, -104.9719200 |
| Altitude | 1631 |
| Country | United States |
#2 Keenesburg
City in Weld County, Colorado, United States of America
| Population | 1,302 |
| Coordinates | 40.1083200, -104.5199600 |
| Altitude | 1510 |
| Country | United States |
End: Keenesburg (-104.51996, 40.10832)
Estimated Travel Time
Distance: 54 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 06m |
| 40 mph (64.37 km/h) | 00h 50m |
| 50 mph (80.47 km/h) | 00h 40m |
| 60 mph (96.56 km/h) | 00h 33m |
| 70 mph (112.65 km/h) | 00h 28m |
| 80 mph (129 km/h) | 00h 24m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.70 | $4.36 | $8.73 |
| Mid-grade | $4.08 | $4.82 | $9.64 |
| Premium | $4.39 | $5.18 | $10.36 |
| Diesel | $4.74 | $5.59 | $11.18 |
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.