How far is Griffith, IN from Decatur, IN?
The driving distance from Griffith, IN to Decatur, IN is about 165.5 miles (266.4 km), with a travel time of about 03h 14m by car.
- The straight-line flight distance is about 138.4 miles (222.7 km).
- For a round trip, plan for roughly 06h 29m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM CDT.
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 14m.
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.
Showers And Thunderstorms
Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Griffith and Decatur.
Turn-by-Turn Driving Directions
Step-by-step road directions between Griffith and Decatur.
-
1
Start on East Miller Street
1100 ft · 54 sec · East Miller Street
-
2
Turn left onto North Broad Street
1.5 km · 2 min · North Broad Street
-
3
Turn right onto West Avenue D
1335 ft · 37 sec · West Avenue D
-
4
Continue on South Cline Avenue
2.3 mi · 6 min · South Cline Avenue
-
5
Turn left onto West Lincoln Highway
1.6 mi · 3 min · West Lincoln Highway
-
6
Continue on Joliet Street
2757 ft · 49 sec · Joliet Street
-
7
Continue on West Lincoln Highway
1.1 mi · 2 min · West Lincoln Highway
-
8
Continue on West 81st Avenue
1.9 mi · 3 min · West 81st Avenue
-
9
Continue on East 81st Avenue
6 mi · 9 min · East 81st Avenue
-
10
Continue on US Route 30
6.6 mi · 9 min · US Route 30
-
11
Continue on West Morthland Drive
105.6 mi · 2 hr 19 min · West Morthland Drive
-
12
Continue straight
2056 ft · 31 sec
-
13
Turn left onto West Coliseum Boulevard
1.7 mi · 2 min · West Coliseum Boulevard
-
14
Keep slight right to continue on Lima Road
1.1 mi · 1 min · Lima Road
-
15
Continue on North Clinton Street
1.2 mi · 1 min · North Clinton Street
-
16
Continue on N Clinton Street
3 mi · 4 min · N Clinton Street
-
17
Merge slight left onto Lafayette Street
18.9 mi · 23 min · Lafayette Street
-
18
Turn left onto West Monroe Street
2422 ft · 41 sec · West Monroe Street
-
19
Arrive at your destination
0 m · 1 sec · West Monroe Street
Car Route Details
A richer read on the saved driving route between Griffith and Decatur.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
West Morthland Drive
Continue on West Morthland Drive
106 mi · 02h 19m
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.
Showers And Thunderstorms leaving Griffith and Showers And Thunderstorms near Decatur.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Griffith to Decatur?
The road trip is about 165.5 miles (266.4 km) and usually takes 03h 14m 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 76.7 miles from Griffith and 88.9 miles from Decatur.
How much longer is the road route than the straight-line distance?
The direct path is about 138.4 miles (222.7 km), while the road route adds roughly 27.1 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 CDT. If you want a more comfortable same-day return, try to leave by 10:30 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $22.55 one way or $45.11 round trip. Estimated CO2 is about 51.9 kg one way.
Do you cross a time zone on this route?
Yes. There is about a 1 hour time difference between Griffith and Decatur, so arrival and return times should be read in local time.
What should you check before leaving?
Before you leave, expect Showers And Thunderstorms around Griffith and Showers And Thunderstorms near Decatur.
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 Griffith and Decatur. Straight-line distance: 138.39 mi (222.71 km).
#1 Griffith
Town in Calumet and St.
| Population | 16,032 |
| Coordinates | 41.5283700, -87.4236500 |
| Altitude | 192 |
| 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: 266 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 05h 30m |
| 40 mph (64.37 km/h) | 04h 08m |
| 50 mph (80.47 km/h) | 03h 18m |
| 60 mph (96.56 km/h) | 02h 45m |
| 70 mph (112.65 km/h) | 02h 21m |
| 80 mph (129 km/h) | 02h 03m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.86 | $22.55 | $45.11 |
| Mid-grade | $4.46 | $26.02 | $52.03 |
| Premium | $4.99 | $29.13 | $58.26 |
| Diesel | $6.62 | $38.67 | $77.33 |
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