How far is Louisville, KY from Boulder, CO?
The driving distance from Louisville, KY to Boulder, CO is about 1128.8 miles (1816.7 km), with a travel time of about 20h 09m by car.
- The straight-line flight distance is about 1050.6 miles (1690.8 km).
- For a round trip, plan for roughly 40h 18m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 7:30 AM EDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
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 20h 09m.
Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
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.
Unincorporated community in Shawnee County, Kansas
Route Weather Snapshot
Check the forecast at both ends before you head out.
Patchy Fog then Sunny
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Louisville and Boulder.
Turn-by-Turn Driving Directions
Step-by-step road directions between Louisville and Boulder.
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1
Start on West Jefferson Street
1611 ft · 1 min · West Jefferson Street
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2
Turn right onto Roy Wilkins Avenue
535 ft · 11 sec · Roy Wilkins Avenue
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3
Take the ramp straight toward I 64 West, I 64 East: New Albany, Saint Louis, Lexington
139 m · 11 sec
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4
Keep slight left to continue on I 64 West: New Albany, Saint Louis
1502 ft · 37 sec
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5
Merge slight left
2.4 mi · 3 min
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6
Keep slight right
5.3 mi · 7 min
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7
Continue straight
176.6 mi · 3 hr 10 min
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8
Keep slight left to continue on I 64 West: Saint Louis
70.8 mi · 1 hr 18 min
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9
Take the exit slight right toward I 70 West, IL 3 North: Kansas City
1.1 km · 1 min
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10
Merge slight right
235.2 mi · 4 hr 31 min
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11
Continue on Truman/Eisenhower Presidential Highway
2.7 mi · 3 min · Truman/Eisenhower Presidential Highway
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12
Continue on Clifton J. Scott Memorial Highway
1.8 mi · 2 min · Clifton J. Scott Memorial Highway
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13
Continue on Truman/Eisenhower Presidential Highway
2.9 mi · 3 min · Truman/Eisenhower Presidential Highway
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14
Continue on George Brett Super Highway
6.8 mi · 9 min · George Brett Super Highway
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15
Keep slight left to continue on I 670 West, I 70 Alternate, I 35 South: Topeka, Wichita
3.8 mi · 6 min
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16
Merge slight left
53.8 mi · 55 min
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17
Keep slight right to continue on Kansas Turnpike
1.5 km · 1 min · Kansas Turnpike
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18
Continue on Truman/Eisenhower Presidential Highway
91.6 mi · 1 hr 34 min · Truman/Eisenhower Presidential Highway
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19
Continue on Dwight D. Eisenhower Highway
438.5 mi · 7 hr 19 min · Dwight D. Eisenhower Highway
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20
Continue on Tuskegee Airmen Memorial Highway
3.4 mi · 4 min · Tuskegee Airmen Memorial Highway
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21
Keep slight right to continue on Tuskegee Airmen Memorial Highway
2.8 mi · 4 min · Tuskegee Airmen Memorial Highway
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22
Keep slight right to continue on Dwight D. Eisenhower Highway
6.6 mi · 9 min · Dwight D. Eisenhower Highway
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23
Continue on Denver–Boulder Turnpike
2.4 mi · 3 min · Denver–Boulder Turnpike
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24
Keep slight right to continue on Denver–Boulder Turnpike
1.7 mi · 2 min · Denver–Boulder Turnpike
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25
Keep slight right to continue on Denver–Boulder Turnpike
2.3 mi · 3 min · Denver–Boulder Turnpike
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26
Keep slight right to continue on Denver–Boulder Turnpike
1.9 mi · 2 min · Denver–Boulder Turnpike
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27
Keep slight right to continue on Denver–Boulder Turnpike
2.1 mi · 2 min · Denver–Boulder Turnpike
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28
Keep slight right to continue on Denver–Boulder Turnpike
2.9 mi · 3 min · Denver–Boulder Turnpike
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29
Keep slight right to continue on Denver–Boulder Turnpike
2.4 mi · 3 min · Denver–Boulder Turnpike
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30
Keep slight right to continue on Denver–Boulder Turnpike
2.2 mi · 3 min · Denver–Boulder Turnpike
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31
Keep slight left to continue on Denver–Boulder Turnpike
2.3 mi · 3 min · Denver–Boulder Turnpike
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32
Continue on 28th Street
1.2 km · 2 min · 28th Street
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33
Turn left onto Arapahoe Avenue
1 km · 2 min · Arapahoe Avenue
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34
Turn right onto 19th Street
44 m · 11 sec · 19th Street
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35
Turn left
27 m · 5 sec
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36
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Louisville and Boulder.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
Dwight D. Eisenhower Highway
Continue on Dwight D. Eisenhower Highway
438 mi · 07h 19m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
Better with a longer stop
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
Patchy Fog then Sunny leaving Louisville and Mostly Sunny near Boulder.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Louisville to Boulder?
The road trip is about 1128.8 miles (1816.7 km) and usually takes 20h 09m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
What is the halfway point on this route?
Tecumseh is a useful midpoint, sitting about 561.7 miles from Louisville and 567.1 miles from Boulder.
How much longer is the road route than the straight-line distance?
The direct path is about 1050.6 miles (1690.8 km), while the road route adds roughly 78.2 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 6:00 AM to 7:30 AM EDT. Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $156.61 one way or $313.22 round trip. Estimated CO2 is about 354 kg one way.
Do you cross a time zone on this route?
Yes. There is about a 2 hour time difference between Louisville and Boulder, so arrival and return times should be read in local time.
What should you check before leaving?
Before you leave, expect Patchy Fog then Sunny around Louisville and Mostly Sunny near Boulder.
Stop Ideas Near Tecumseh
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 Tecumseh.
Topeka
Lawrence
Union Station
Independence
Flight Path Map
This map shows the direct air route between Louisville and Boulder. Straight-line distance: 1050.58 mi (1690.75 km).
#1 Louisville
The nineteenth most populous city in the United States and the center of the Louisville metropolitan area.
| Population | 760,026 |
| Coordinates | 38.2542400, -85.7594100 |
| Altitude | 142 |
| Country | United States |
#2 Boulder
The most populous city in Boulder County, Colorado.
| Population | 107,645 |
| Coordinates | 40.0149900, -105.2705500 |
| Altitude | 1624 |
| Country | United States |
End: Boulder (-105.27055, 40.01499)
Estimated Travel Time
Distance: 1817 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 37h 36m |
| 40 mph (64.37 km/h) | 28h 13m |
| 50 mph (80.47 km/h) | 22h 34m |
| 60 mph (96.56 km/h) | 18h 48m |
| 70 mph (112.65 km/h) | 16h 07m |
| 80 mph (129 km/h) | 14h 04m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.93 | $156.61 | $313.22 |
| Mid-grade | $4.51 | $179.55 | $359.11 |
| Premium | $4.93 | $196.16 | $392.33 |
| Diesel | $6.11 | $243.32 | $486.64 |
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 Kentucky · Oct 20, 2026