How far is Portage, IN from Decatur, IN?
The driving distance from Portage, IN to Decatur, IN is about 144.3 miles (232.2 km), with a travel time of about 03h 10m by car.
- The straight-line flight distance is about 127.6 miles (205.4 km).
- For a round trip, plan for roughly 06h 21m 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 10m.
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.
Town in Indiana, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Sunny
Mostly Cloudy
Driving Route Map
The map below follows the saved road route between Portage and Decatur.
Turn-by-Turn Driving Directions
Step-by-step road directions between Portage and Decatur.
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1
Start on Central Avenue
1 km · 1 min · Central Avenue
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2
Turn right onto Airport Road
1.7 mi · 4 min · Airport Road
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3
Turn left
5.9 mi · 9 min
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4
Take the ramp slight right toward SR 49 South: Valparaiso
2031 ft · 56 sec
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5
Merge slight left
6.8 mi · 9 min
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6
Take the exit slight right toward US 30 East: Plymouth
1548 ft · 39 sec
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7
Merge slight left onto East Morthland Drive
101.8 mi · 2 hr 13 min · East Morthland Drive
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8
Continue straight
2056 ft · 31 sec
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9
Turn left onto West Coliseum Boulevard
1.7 mi · 2 min · West Coliseum Boulevard
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10
Keep slight right to continue on Lima Road
1.1 mi · 1 min · Lima Road
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11
Continue on North Clinton Street
1.2 mi · 1 min · North Clinton Street
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12
Continue on N Clinton Street
3 mi · 4 min · N Clinton Street
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13
Merge slight left onto Lafayette Street
18.9 mi · 23 min · Lafayette Street
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14
Turn left onto West Monroe Street
2422 ft · 41 sec · West Monroe Street
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15
Arrive at your destination
0 m · 1 sec · West Monroe Street
Car Route Details
A richer read on the saved driving route between Portage and Decatur.
Interchange-aware route
The drive includes several ramps, exits, or merges, so checking the next few maneuvers before busy interchanges is useful.
East Morthland Drive
Merge slight left onto East Morthland Drive
102 mi · 02h 13m
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.
Partly Sunny leaving Portage and Mostly Cloudy near Decatur.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Portage to Decatur?
The road trip is about 144.3 miles (232.2 km) and usually takes 03h 10m 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?
Etna Green is a useful midpoint, sitting about 72 miles from Portage and 72.3 miles from Decatur.
How much longer is the road route than the straight-line distance?
The direct path is about 127.6 miles (205.4 km), while the road route adds roughly 16.7 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 10:38 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $19.19 one way or $38.39 round trip. Estimated CO2 is about 45.2 kg one way.
Do you cross a time zone on this route?
Yes. There is about a 1 hour time difference between Portage and Decatur, so arrival and return times should be read in local time.
What should you check before leaving?
Before you leave, expect Partly Sunny around Portage and Mostly Cloudy near Decatur.
Stop Ideas Near Etna Green
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 Etna Green.
Elkhart station
South Bend station
Niles station
Dowagiac station
Flight Path Map
This map shows the direct air route between Portage and Decatur. Straight-line distance: 127.65 mi (205.43 km).
#1 Portage
The second most populous city in Porter County, Indiana.
| Population | 90,543 |
| Coordinates | 41.5758700, -87.1761500 |
| Altitude | 194 |
| Country | United States |
#2 Decatur
City in Indiana, United States
| Population | 34,821 |
| Coordinates | 40.8306000, -84.9291300 |
| Altitude | 244 |
| Country | United States |
End: Decatur (-84.92913, 40.8306)
Estimated Travel Time
Distance: 232 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 04h 48m |
| 40 mph (64.37 km/h) | 03h 36m |
| 50 mph (80.47 km/h) | 02h 53m |
| 60 mph (96.56 km/h) | 02h 24m |
| 70 mph (112.65 km/h) | 02h 03m |
| 80 mph (129 km/h) | 01h 47m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $19.19 | $38.39 |
| Mid-grade | $4.25 | $21.65 | $43.30 |
| Premium | $4.65 | $23.69 | $47.38 |
| Diesel | $5.30 | $27.00 | $53.99 |
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 · May 07, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.