How far is Sullivan, IN from Portage, IN?
The driving distance from Sullivan, IN to Portage, IN is about 197.1 miles (317.2 km), with a travel time of about 03h 29m by car.
- The straight-line flight distance is about 171.8 miles (276.5 km).
- For a round trip, plan for roughly 06h 58m 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 29m.
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 Grant Township, Benton County, Indiana, United State
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Showers And Thunderstorms
Sunny then Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Sullivan and Portage.
Turn-by-Turn Driving Directions
Step-by-step road directions between Sullivan and Portage.
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1
Start on South State Street
9 m · 7 sec · South State Street
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2
Turn left onto East Washington Street
1067 ft · 37 sec · East Washington Street
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3
Turn right onto North Section Street
2.5 mi · 4 min · North Section Street
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4
Take the ramp straight toward North Section Street
1193 ft · 33 sec · North Section Street
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5
Merge slight left
25.3 mi · 40 min
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6
Turn straight onto Chicago
63.3 mi · 1 hr 21 min
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7
Continue straight
47.3 mi · 1 hr
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8
Turn right onto State Road 14
9.5 mi · 13 min · State Road 14
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9
Take the ramp left
2584 ft · 1 min
-
10
Merge slight left
38.5 mi · 43 min
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11
Take the exit slight right toward I 80 East, I 94 East, US 6 East: Toledo, Detroit
1.4 km · 1 min
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12
Keep slight right to continue on Central Avenue
1760 ft · 38 sec
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13
Turn right onto Central Avenue
4.3 mi · 9 min · Central Avenue
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14
Continue on Central Avenue
1.4 mi · 3 min · Central Avenue
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15
Arrive at your destination
0 m · 1 sec · Central Avenue
Car Route Details
A richer read on the saved driving route between Sullivan and Portage.
Interchange-aware route
The drive includes several ramps, exits, or merges, so checking the next few maneuvers before busy interchanges is useful.
Chicago
Turn straight onto Chicago
63.3 mi · 01h 21m
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.
Chance Showers And Thunderstorms leaving Sullivan and Sunny then Chance Rain Showers near Portage.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Sullivan to Portage?
The road trip is about 197.1 miles (317.2 km) and usually takes 03h 29m 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?
Boswell is a useful midpoint, sitting about 97.2 miles from Sullivan and 99.9 miles from Portage.
How much longer is the road route than the straight-line distance?
The direct path is about 171.8 miles (276.5 km), while the road route adds roughly 25.3 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 $26.25 one way or $52.49 round trip. Estimated CO2 is about 61.9 kg one way.
Do you cross a time zone on this route?
Yes. There is about a 1 hour time difference between Sullivan and Portage, so arrival and return times should be read in local time.
What should you check before leaving?
Before you leave, expect Chance Showers And Thunderstorms around Sullivan and Sunny then Chance Rain Showers near Portage.
Stop Ideas Near Boswell
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 Boswell.
Lafayette station
Danville, Illinois
Rensselaer
Gilman
Flight Path Map
This map shows the direct air route between Sullivan and Portage. Straight-line distance: 171.82 mi (276.51 km).
#1 Sullivan
City in the U.
| Population | 4,089 |
| Coordinates | 39.0953200, -87.4058500 |
| Altitude | 161 |
| 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: 317 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 06h 34m |
| 40 mph (64.37 km/h) | 04h 55m |
| 50 mph (80.47 km/h) | 03h 56m |
| 60 mph (96.56 km/h) | 03h 17m |
| 70 mph (112.65 km/h) | 02h 48m |
| 80 mph (129 km/h) | 02h 27m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $26.25 | $52.49 |
| Mid-grade | $4.25 | $29.60 | $59.20 |
| Premium | $4.65 | $32.39 | $64.78 |
| Diesel | $5.30 | $36.92 | $73.83 |
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 05, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.