How far is Gas City, IN from Portage, IN?
The driving distance from Gas City, IN to Portage, IN is about 145.6 miles (234.3 km), with a travel time of about 02h 38m by car.
- The straight-line flight distance is about 110.9 miles (178.4 km).
- For a round trip, plan for roughly 05h 17m 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 38m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
This departure sits inside the recommended comfort window for the route.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Unincorporated community in Marshall County, Indiana
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Gas City and Portage.
Turn-by-Turn Driving Directions
Step-by-step road directions between Gas City and Portage.
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1
Start on South 2nd Street
70 m · 15 sec · South 2nd Street
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2
Turn left onto East Main Street
583 ft · 16 sec · East Main Street
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3
Continue on East Hi Way Drive
1.1 km · 1 min · East Hi Way Drive
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4
Turn right onto North Main Street
1127 ft · 23 sec · North Main Street
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5
Continue on South Adams Street
5.2 mi · 10 min · South Adams Street
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6
Turn left onto East 3rd Street
1.1 km · 51 sec · East 3rd Street
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7
Continue on West Delphi Avenue
939 ft · 14 sec · West Delphi Avenue
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8
Continue on West 2nd Street
148 m · 10 sec · West 2nd Street
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9
Turn right onto South Baldwin Avenue
1.1 mi · 1 min · South Baldwin Avenue
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10
Turn left onto North Wabash Avenue
2919 ft · 50 sec · North Wabash Avenue
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11
Continue on North Wabash Road
4.8 mi · 7 min · North Wabash Road
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12
Continue on County Road 187 West
2304 ft · 39 sec · County Road 187 West
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13
Continue on South Wabash Street
11.8 mi · 18 min · South Wabash Street
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14
Turn left onto West Market Street
957 ft · 22 sec · West Market Street
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15
Turn right onto South Cass Street
1.5 mi · 2 min · South Cass Street
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16
Continue on North Cass Street
1.3 km · 1 min · North Cass Street
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17
Continue on County Road 500 West
2271 ft · 38 sec · County Road 500 West
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18
Continue on North 500 West
6.4 mi · 10 min · North 500 West
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19
Turn left onto State Road 16
3.1 mi · 5 min · State Road 16
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20
Continue on East 1000 North
11.1 mi · 16 min · East 1000 North
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21
Turn right
32.9 mi · 41 min
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22
Take the exit slight right toward US 30 West: Valparaiso
1453 ft · 49 sec
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23
Merge slight left
40.3 mi · 52 min
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24
Take the exit slight right toward SR 49 North, SR 2 East: Valparaiso, Chesterton
9.2 mi · 13 min
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25
Turn left onto I 80, I 90: Toll Road
120 m · 10 sec
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26
Continue straight
757 ft · 18 sec
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27
Continue on I 80, I 90: Toll Road
125 m · 10 sec
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28
Keep slight right to continue on I 80 West, I 90 West: Chicago
1246 ft · 31 sec
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29
Merge slight left onto Indiana Toll Road
6.5 mi · 8 min · Indiana Toll Road
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30
Take the exit slight right toward Portage
3121 ft · 1 min
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31
Keep slight left
47 m · 11 sec
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32
Turn left onto Willowcreek Road
3071 ft · 1 min · Willowcreek Road
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33
Turn left onto Central Avenue
1906 ft · 50 sec · Central Avenue
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34
Arrive at your destination
0 m · 1 sec · Central Avenue
Car Route Details
A richer read on the saved driving route between Gas City and Portage.
Interchange-aware route
The drive includes several ramps, exits, or merges, so checking the next few maneuvers before busy interchanges is useful.
US 30 West
Merge slight left
40.3 mi · 00h 52m
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.
Mostly Sunny leaving Gas City and Mostly Sunny near Portage.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Gas City to Portage?
The road trip is about 145.6 miles (234.3 km) and usually takes 02h 38m 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?
Walnut is a useful midpoint, sitting about 70.3 miles from Gas City and 75.3 miles from Portage.
How much longer is the road route than the straight-line distance?
The direct path is about 110.9 miles (178.4 km), while the road route adds roughly 34.7 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 8:00 AM to 10:00 AM EDT. If you want a more comfortable same-day return, try to leave by 1:12 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $19.38 one way or $38.77 round trip. Estimated CO2 is about 45.7 kg one way.
Do you cross a time zone on this route?
Yes. There is about a 1 hour time difference between Gas City and Portage, so arrival and return times should be read in local time.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Gas City and Mostly Sunny near Portage.
Stop Ideas Near Walnut
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 Walnut.
South Bend station
Elkhart station
Niles station
New Buffalo, Michigan
Flight Path Map
This map shows the direct air route between Gas City and Portage. Straight-line distance: 110.88 mi (178.44 km).
#1 Gas City
City in Grant County, Indiana, United States
| Population | 5,772 |
| Coordinates | 40.4872600, -85.6130300 |
| Altitude | 261 |
| Country | United States |
#2 Portage
The second most populous city in Porter County, Indiana.
| Population | 90,543 |
| Coordinates | 41.5758700, -87.1761500 |
| Altitude | 194 |
| Country | United States |
End: Central Avenue (-87.17615, 41.575874)
Estimated Travel Time
Distance: 234 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 04h 51m |
| 40 mph (64.37 km/h) | 03h 38m |
| 50 mph (80.47 km/h) | 02h 54m |
| 60 mph (96.56 km/h) | 02h 25m |
| 70 mph (112.65 km/h) | 02h 04m |
| 80 mph (129 km/h) | 01h 48m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $19.38 | $38.77 |
| Mid-grade | $4.25 | $21.86 | $43.72 |
| Premium | $4.65 | $23.92 | $47.84 |
| Diesel | $5.30 | $27.26 | $54.53 |
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 31, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.