How far is Auburn, IN from Decatur, IN?
The driving distance from Auburn, IN to Decatur, IN is about 45.2 miles (72.8 km), with a travel time of about 00h 52m by car.
- The straight-line flight distance is about 37.7 miles (60.6 km).
- For a round trip, plan for roughly 01h 44m 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 00h 52m.
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.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Showers And Thunderstorms
Slight Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Auburn and Decatur.
Turn-by-Turn Driving Directions
Step-by-step road directions between Auburn and Decatur.
-
1
Start on West 7th Street
1.3 mi · 2 min · West 7th Street
-
2
Turn left
926 ft · 25 sec
-
3
Merge slight left
16.1 mi · 18 min
-
4
Take the exit slight right toward Coldwater Road South, Coldwater Road North
1092 ft · 21 sec
-
5
Keep slight left to continue on Coldwater Road South
1591 ft · 39 sec
-
6
Turn straight onto Coldwater Road
1.9 mi · 3 min · Coldwater Road
-
7
Continue on North Clinton Street
1353 ft · 23 sec · North Clinton Street
-
8
Continue on Edgewood Avenue
833 ft · 16 sec · Edgewood Avenue
-
9
Turn left onto Lima Road
724 ft · 15 sec · Lima Road
-
10
Continue on North Clinton Street
1.2 mi · 1 min · North Clinton Street
-
11
Continue on N Clinton Street
3 mi · 4 min · N Clinton Street
-
12
Merge slight left onto Lafayette Street
18.9 mi · 23 min · Lafayette Street
-
13
Turn left onto West Monroe Street
2422 ft · 41 sec · West Monroe Street
-
14
Arrive at your destination
0 m · 1 sec · West Monroe Street
Car Route Details
A richer read on the saved driving route between Auburn and Decatur.
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.
Lafayette Street
Merge slight left onto Lafayette Street
18.9 mi · 00h 23m
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.
Showers And Thunderstorms leaving Auburn and Slight Chance Rain Showers near Decatur.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Auburn to Decatur?
The road trip is about 45.2 miles (72.8 km) and usually takes 00h 52m 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?
Indian Village is a useful midpoint, sitting about 22 miles from Auburn and 23.3 miles from Decatur.
How much longer is the road route than the straight-line distance?
The direct path is about 37.7 miles (60.6 km), while the road route adds roughly 7.5 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 4:46 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $6.18 one way or $12.36 round trip. Estimated CO2 is about 14.2 kg one way.
What should you check before leaving?
Before you leave, expect Showers And Thunderstorms around Auburn and Slight Chance Rain Showers near Decatur.
Stop Ideas Near Indian Village
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 Indian Village.
Waterloo
Bryan
Elkhart station
South Bend station
Flight Path Map
This map shows the direct air route between Auburn and Decatur. Straight-line distance: 37.67 mi (60.63 km).
#1 Auburn
City in DeKalb County, Indiana, United States
| Population | 13,617 |
| Coordinates | 41.3669900, -85.0588600 |
| Altitude | 264 |
| Country | United States |
#2 Decatur
City in Indiana, United States
| Population | 34,821 |
| Coordinates | 40.8306000, -84.9291300 |
| Altitude | 244 |
| Country | United States |
End: West Monroe Street (-84.929141, 40.83064)
Estimated Travel Time
Distance: 73 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 30m |
| 40 mph (64.37 km/h) | 01h 07m |
| 50 mph (80.47 km/h) | 00h 54m |
| 60 mph (96.56 km/h) | 00h 45m |
| 70 mph (112.65 km/h) | 00h 38m |
| 80 mph (129 km/h) | 00h 33m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.86 | $6.18 | $12.36 |
| Mid-grade | $4.46 | $7.13 | $14.26 |
| Premium | $4.99 | $7.98 | $15.96 |
| Diesel | $6.62 | $10.59 | $21.19 |
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 · Oct 15, 2026