How far is Boulder, CO from Louisville, KY?
The driving distance from Boulder, CO to Louisville, KY is about 1128.9 miles (1816.8 km), with a travel time of about 20h 08m by car.
- The straight-line flight distance is about 1050.6 miles (1690.8 km).
- For a round trip, plan for roughly 40h 17m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 7:30 AM MDT.
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 08m.
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.
Mostly Sunny
Patchy Fog then Sunny
Driving Route Map
The map below follows the saved road route between Boulder and Louisville.
Turn-by-Turn Driving Directions
Step-by-step road directions between Boulder and Louisville.
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1
Start on the route
27 m · 7 sec
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2
Turn right onto 19th Street
44 m · 14 sec · 19th Street
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3
Turn left onto Arapahoe Avenue
3210 ft · 2 min · Arapahoe Avenue
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4
Turn right onto 28th Street
1.2 km · 2 min · 28th Street
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5
Turn straight onto Denver–Boulder Turnpike
3.4 mi · 4 min · Denver–Boulder Turnpike
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6
Keep slight right to continue on Denver–Boulder Turnpike
1.7 mi · 2 min · Denver–Boulder Turnpike
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7
Keep slight right to continue on Denver–Boulder Turnpike
2.6 mi · 3 min · Denver–Boulder Turnpike
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8
Keep slight right to continue on Denver–Boulder Turnpike
2.4 mi · 3 min · Denver–Boulder Turnpike
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9
Keep slight right to continue on Denver–Boulder Turnpike
2.2 mi · 3 min · Denver–Boulder Turnpike
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10
Keep slight right to continue on Denver–Boulder Turnpike
1.9 mi · 2 min · Denver–Boulder Turnpike
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11
Keep slight right to continue on Denver–Boulder Turnpike
2.5 mi · 3 min · Denver–Boulder Turnpike
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12
Keep slight right to continue on Denver–Boulder Turnpike
2 mi · 2 min · Denver–Boulder Turnpike
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13
Keep slight right to continue on Denver–Boulder Turnpike
1.3 mi · 2 min · Denver–Boulder Turnpike
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14
Continue on Dwight D. Eisenhower Highway
6.9 mi · 9 min · Dwight D. Eisenhower Highway
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15
Merge slight left onto Tuskegee Airmen Memorial Highway
3.8 mi · 5 min · Tuskegee Airmen Memorial Highway
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16
Keep slight left to continue on Tuskegee Airmen Memorial Highway
2.4 mi · 3 min · Tuskegee Airmen Memorial Highway
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17
Continue on Dwight D. Eisenhower Highway
438.4 mi · 7 hr 19 min · Dwight D. Eisenhower Highway
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18
Continue on Truman/Eisenhower Presidential Highway
74.7 mi · 1 hr 15 min · Truman/Eisenhower Presidential Highway
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19
Continue on Dwight D. Eisenhower Highway
1.1 mi · 1 min · Dwight D. Eisenhower Highway
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20
Continue on Truman/Eisenhower Presidential Highway
14.9 mi · 17 min · Truman/Eisenhower Presidential Highway
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21
Keep slight left to continue on Truman/Eisenhower Presidential Highway
1.2 km · 52 sec · Truman/Eisenhower Presidential Highway
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22
Continue on Kansas Turnpike
54.7 mi · 56 min · Kansas Turnpike
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23
Keep slight left to continue on Jay B. Dillingham Freeway
4.1 mi · 6 min · Jay B. Dillingham Freeway
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24
Merge slight left onto George Brett Super Highway
6.6 mi · 9 min · George Brett Super Highway
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25
Continue on Truman/Eisenhower Presidential Highway
2.9 mi · 3 min · Truman/Eisenhower Presidential Highway
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26
Continue on Clifton J. Scott Memorial Highway
1.8 mi · 2 min · Clifton J. Scott Memorial Highway
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27
Continue on Truman/Eisenhower Presidential Highway
2.6 mi · 3 min · Truman/Eisenhower Presidential Highway
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28
Continue on Dwight D. Eisenhower Highway
52.5 mi · 57 min · Dwight D. Eisenhower Highway
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29
Continue on U.S. Submarine Veterans' Memorial Highway
32 mi · 34 min · U.S. Submarine Veterans' Memorial Highway
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30
Keep slight left to continue on U.S. Submarine Veterans' Memorial Highway
22.4 mi · 24 min · U.S. Submarine Veterans' Memorial Highway
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31
Continue on Dwight D. Eisenhower Highway
1.8 mi · 2 min · Dwight D. Eisenhower Highway
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32
Continue on Highway Patrol Sgt. Benjamin Booth Memorial Highway
1.6 mi · 2 min · Highway Patrol Sgt. Benjamin Booth Memorial Highway
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33
Continue on Sheriff Roger I. Wilson Memorial Highway
1.9 mi · 2 min · Sheriff Roger I. Wilson Memorial Highway
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34
Continue on Dwight D. Eisenhower Highway
111.4 mi · 2 hr 13 min · Dwight D. Eisenhower Highway
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35
Take the exit slight right toward Bermuda Road
1578 ft · 24 sec
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36
Keep slight left to continue on I 70 East: Saint Louis
810 ft · 13 sec
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37
Merge slight left
6.8 mi · 9 min
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38
Continue on Andy Gammon Memorial Highway
1.5 mi · 2 min · Andy Gammon Memorial Highway
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39
Keep slight right to continue on Andy Gammon Memorial Highway
1594 ft · 39 sec · Andy Gammon Memorial Highway
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40
Continue on Stan Musial Veterans Memorial Bridge
2.5 mi · 3 min · Stan Musial Veterans Memorial Bridge
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41
Take the exit slight right toward I 64 East: Louisville
3234 ft · 50 sec
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42
Merge slight left
74.7 mi · 1 hr 22 min
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43
Keep slight left to continue on I 64 East: Louisville
174.4 mi · 3 hr 8 min
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44
Keep slight right
6 mi · 8 min
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45
Take the exit slight right toward 9th Street, Roy Wilkins Avenue, Downtown
1472 ft · 36 sec
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46
Keep slight left to continue on Roy Wilkins Avenue
1159 ft · 30 sec · Roy Wilkins Avenue
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47
Turn left onto West Liberty Street
1961 ft · 55 sec · West Liberty Street
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48
Turn left onto South 5th Street
86 m · 15 sec · South 5th Street
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49
Turn left onto West Jefferson Street
67 m · 8 sec · West Jefferson Street
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50
Arrive at your destination
0 m · 1 sec · West Jefferson Street
Car Route Details
A richer read on the saved driving route between Boulder and Louisville.
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.
Mostly Sunny leaving Boulder and Patchy Fog then Sunny near Louisville.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Boulder to Louisville?
The road trip is about 1128.9 miles (1816.8 km) and usually takes 20h 08m 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 563.3 miles from Boulder and 565.6 miles from Louisville.
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 78.3 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 6:00 AM to 7:30 AM MDT. 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 $172.58 one way or $345.17 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 Boulder and Louisville, so arrival and return times should be read in local time.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Boulder and Patchy Fog then Sunny near Louisville.
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 Boulder and Louisville. Straight-line distance: 1050.58 mi (1690.75 km).
#1 Boulder
The most populous city in Boulder County, Colorado.
| Population | 107,645 |
| Coordinates | 40.0149900, -105.2705500 |
| Altitude | 1624 |
| Country | United States |
#2 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 |
End: Louisville (-85.75941, 38.25424)
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 05m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.33 | $172.58 | $345.17 |
| Mid-grade | $4.73 | $188.36 | $376.71 |
| Premium | $5.07 | $201.82 | $403.64 |
| Diesel | $6.62 | $263.71 | $527.43 |
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 · Oct 20, 2026