How far is Decatur, IN from West Lafayette, IN?
The driving distance from Decatur, IN to West Lafayette, IN is about 121.1 miles (194.9 km), with a travel time of about 02h 15m by car.
- The straight-line flight distance is about 107.5 miles (173 km).
- For a round trip, plan for roughly 04h 31m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM EDT.
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 02h 15m.
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.
County seat of Wabash County, Indiana, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Slight Chance Rain Showers then Sunny
Scattered Rain Showers then Mostly Sunny
Driving Route Map
The map below follows the saved road route between Decatur and West Lafayette.
Turn-by-Turn Driving Directions
Step-by-step road directions between Decatur and West Lafayette.
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1
Start on West Monroe Street
2422 ft · 46 sec · West Monroe Street
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2
Turn right onto North 13th Street
13.7 mi · 16 min · North 13th Street
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3
Turn left
1626 ft · 42 sec
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4
Merge slight left onto Ronald Reagan Expressway
11.6 mi · 12 min · Ronald Reagan Expressway
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5
Continue on Lafayette Center Road
2 mi · 3 min · Lafayette Center Road
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6
Continue on East 900 North
1.8 mi · 3 min · East 900 North
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7
Turn left
11.7 mi · 15 min
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8
Continue on Wabash Road
44.6 mi · 56 min · Wabash Road
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9
Turn right onto Wabash Road
1.6 mi · 2 min · Wabash Road
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10
Continue on Logansport Bypass
1.1 mi · 1 min · Logansport Bypass
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11
Continue on Hoosier Heartland Highway
35 mi · 44 min · Hoosier Heartland Highway
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12
Enter the roundabout and take exit 2 toward Hoosier Heartland Highway
72 m · 7 sec · Hoosier Heartland Highway
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13
Exit the roundabout onto Hoosier Heartland Highway
1943 ft · 41 sec · Hoosier Heartland Highway
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14
Continue on Schuyler Avenue
2.1 mi · 4 min · Schuyler Avenue
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15
Continue on North 15th Street
2364 ft · 49 sec · North 15th Street
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16
At the end of the road, turn right onto Greenbush Street
1592 ft · 47 sec · Greenbush Street
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17
Continue on Fannon Drive
2476 ft · 1 min · Fannon Drive
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18
Turn left onto Fannon Drive
152 m · 28 sec · Fannon Drive
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19
At the end of the road, turn right onto Salem Street
1181 ft · 29 sec · Salem Street
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20
Continue on Old US Highway 231
1683 ft · 41 sec · Old US Highway 231
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21
Continue on Union Street
118 m · 9 sec · Union Street
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22
Continue on Fowler Avenue
2019 ft · 52 sec · Fowler Avenue
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23
Turn sharp left onto Northwestern Avenue
849 ft · 34 sec · Northwestern Avenue
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24
Arrive at your destination
0 m · 1 sec · Northwestern Avenue
Car Route Details
A richer read on the saved driving route between Decatur and West Lafayette.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
Wabash Road
Continue on Wabash Road
44.6 mi · 00h 56m
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.
Slight Chance Rain Showers then Sunny leaving Decatur and Scattered Rain Showers then Mostly Sunny near West Lafayette.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Decatur to West Lafayette?
The road trip is about 121.1 miles (194.9 km) and usually takes 02h 15m 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?
Wabash is a useful midpoint, sitting about 64.2 miles from Decatur and 56.9 miles from West Lafayette.
How much longer is the road route than the straight-line distance?
The direct path is about 107.5 miles (173 km), while the road route adds roughly 13.6 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 EDT. If you want a more comfortable same-day return, try to leave by 1:58 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $16.10 one way or $32.20 round trip. Estimated CO2 is about 37.9 kg one way.
What should you check before leaving?
Before you leave, expect Slight Chance Rain Showers then Sunny around Decatur and Scattered Rain Showers then Mostly Sunny near West Lafayette.
Stop Ideas Near Wabash
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 Wabash.
Waterloo
Elkhart station
Lafayette station
South Bend station
Flight Path Map
This map shows the direct air route between Decatur and West Lafayette. Straight-line distance: 107.47 mi (172.96 km).
#1 Decatur
City in Indiana, United States
| Population | 34,821 |
| Coordinates | 40.8306000, -84.9291300 |
| Altitude | 244 |
| Country | United States |
#2 West Lafayette
The most populous city in Tippecanoe County, Indiana.
| Population | 51,605 |
| Coordinates | 40.4258700, -86.9080700 |
| Altitude | 186 |
| Country | United States |
End: Northwestern Avenue (-86.908094, 40.425857)
Estimated Travel Time
Distance: 195 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 04h 02m |
| 40 mph (64.37 km/h) | 03h 01m |
| 50 mph (80.47 km/h) | 02h 25m |
| 60 mph (96.56 km/h) | 02h 01m |
| 70 mph (112.65 km/h) | 01h 43m |
| 80 mph (129 km/h) | 01h 30m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $16.10 | $32.20 |
| Mid-grade | $4.25 | $18.16 | $36.32 |
| Premium | $4.65 | $19.87 | $39.75 |
| Diesel | $5.30 | $22.65 | $45.30 |
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 Indiana · Apr 22, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.