How far is Decatur, IN from Dyer, IN?
The driving distance from Decatur, IN to Dyer, IN is about 154.7 miles (249 km), with a travel time of about 03h 28m by car.
- The straight-line flight distance is about 142.4 miles (229.2 km).
- For a round trip, plan for roughly 06h 57m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 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 03h 28m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
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.
Human settlement in Marshall County, Indiana, United States of America
Route Weather Snapshot
Check the forecast at both ends before you head out.
Slight Chance Rain Showers
Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Decatur and Dyer.
Turn-by-Turn Driving Directions
Step-by-step road directions between Decatur and Dyer.
-
1
Start on West Monroe Street
2422 ft · 46 sec · West Monroe Street
-
2
Turn right onto North 13th Street
15.9 mi · 18 min · North 13th Street
-
3
Continue on Lafayette Street
4.7 mi · 6 min · Lafayette Street
-
4
Keep slight right to continue on Lafayette Street
1.4 km · 1 min · Lafayette Street
-
5
Continue on Spy Run Avenue
1.1 mi · 2 min · Spy Run Avenue
-
6
Continue on North Clinton Street
2084 ft · 28 sec · North Clinton Street
-
7
Turn straight onto Lima Road
1.1 mi · 1 min · Lima Road
-
8
Turn left onto West Coliseum Boulevard
1.6 mi · 2 min · West Coliseum Boulevard
-
9
Take the exit slight right toward SR 930 West
863 ft · 24 sec
-
10
Merge slight left onto Goshen Road
1625 ft · 21 sec · Goshen Road
-
11
Continue straight
12.7 mi · 16 min
-
12
Continue straight
104.6 mi · 2 hr 20 min
-
13
Continue on East 81st Avenue
1.5 km · 2 min · East 81st Avenue
-
14
Continue on West 81st Avenue
1.9 mi · 3 min · West 81st Avenue
-
15
Continue on West Lincoln Highway
1.1 mi · 2 min · West Lincoln Highway
-
16
Continue on Joliet Street
2763 ft · 53 sec · Joliet Street
-
17
Continue on West Lincoln Highway
3.9 mi · 6 min · West Lincoln Highway
-
18
Continue on Joliet Street
2.5 mi · 5 min · Joliet Street
-
19
Turn right onto Hart Street
10 m · 1 sec · Hart Street
-
20
Arrive at your destination
0 m · 1 sec · Hart Street
Car Route Details
A richer read on the saved driving route between Decatur and Dyer.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
Goshen Road
Continue straight
105 mi · 02h 20m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Slight Chance Rain Showers leaving Decatur and Showers And Thunderstorms near Dyer.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Decatur to Dyer?
The road trip is about 154.7 miles (249 km) and usually takes 03h 28m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Bourbon is a useful midpoint, sitting about 77.2 miles from Decatur and 77.5 miles from Dyer.
How much longer is the road route than the straight-line distance?
The direct path is about 142.4 miles (229.2 km), while the road route adds roughly 12.3 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 8:00 AM EDT. If you want a more comfortable same-day return, try to leave by 10:02 AM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $21.09 one way or $42.17 round trip. Estimated CO2 is about 48.5 kg one way.
Do you cross a time zone on this route?
Yes. There is about a 1 hour time difference between Decatur and Dyer, so arrival and return times should be read in local time.
What should you check before leaving?
Before you leave, expect Slight Chance Rain Showers around Decatur and Showers And Thunderstorms near Dyer.
Stop Ideas Near Bourbon
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 Bourbon.
Elkhart station
South Bend station
Niles station
New Buffalo, Michigan
Flight Path Map
This map shows the direct air route between Decatur and Dyer. Straight-line distance: 142.43 mi (229.22 km).
#1 Decatur
City in Indiana, United States
| Population | 34,821 |
| Coordinates | 40.8306000, -84.9291300 |
| Altitude | 244 |
| Country | United States |
#2 Dyer
Town in Indiana
| Population | 15,955 |
| Coordinates | 41.4942000, -87.5217100 |
| Altitude | 195 |
| Country | United States |
End: Dyer (-87.52171, 41.4942)
Estimated Travel Time
Distance: 249 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 05h 09m |
| 40 mph (64.37 km/h) | 03h 52m |
| 50 mph (80.47 km/h) | 03h 05m |
| 60 mph (96.56 km/h) | 02h 34m |
| 70 mph (112.65 km/h) | 02h 12m |
| 80 mph (129 km/h) | 01h 55m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.86 | $21.09 | $42.17 |
| Mid-grade | $4.46 | $24.32 | $48.65 |
| Premium | $4.99 | $27.23 | $54.47 |
| Diesel | $6.62 | $36.15 | $72.30 |
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 · Oct 15, 2026