How far is Saint John, IN from Portage, IN?
The driving distance from Saint John, IN to Portage, IN is about 278.9 miles (448.8 km), with a travel time of about 04h 51m by car.
- The straight-line flight distance is about 242 miles (389.5 km).
- For a round trip, plan for roughly 09h 42m 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 04h 51m.
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 Wayne Township, Marion County, Indiana
Route Weather Snapshot
Check the forecast at both ends before you head out.
Showers And Thunderstorms Likely
Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Saint John and Portage.
Turn-by-Turn Driving Directions
Step-by-step road directions between Saint John and Portage.
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1
Start on St John Road
1.1 mi · 4 min · St John Road
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2
At the end of the road, turn left onto New Harmony Road
1.4 mi · 3 min · New Harmony Road
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3
Continue on East Boonville New Harmony Road
750 ft · 21 sec · East Boonville New Harmony Road
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4
Take the ramp right
1524 ft · 37 sec
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5
Merge slight left
146.5 mi · 2 hr 39 min
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6
Take the exit slight left toward I 465 West, I 74 West: Peoria
1.4 mi · 3 min
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7
Merge slight left
9.2 mi · 11 min
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8
Keep slight left
3.9 mi · 5 min
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9
Take the exit slight left toward I 65 North: Chicago
1.1 mi · 2 min
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10
Merge slight right
17.9 mi · 20 min
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11
Take the exit slight right toward US 52 West
1281 ft · 16 sec
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12
Keep slight left
786 ft · 10 sec
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13
Merge slight left
117.5 mi · 2 hr 8 min
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14
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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15
Keep slight right to continue on Central Avenue
1760 ft · 38 sec
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16
Turn right onto Central Avenue
4.3 mi · 9 min · Central Avenue
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17
Continue on Central Avenue
1.4 mi · 3 min · Central Avenue
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18
Arrive at your destination
0 m · 1 sec · Central Avenue
Car Route Details
A richer read on the saved driving route between Saint John and Portage.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
East Boonville New Harmony Road
Merge slight left
146 mi · 02h 39m
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 Likely leaving Saint John and Showers And Thunderstorms near Portage.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Saint John to Portage?
The road trip is about 278.9 miles (448.8 km) and usually takes 04h 51m 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?
Speedway is a useful midpoint, sitting about 153.9 miles from Saint John and 124.9 miles from Portage.
How much longer is the road route than the straight-line distance?
The direct path is about 242 miles (389.5 km), while the road route adds roughly 36.9 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 7:18 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $37.11 one way or $74.21 round trip. Estimated CO2 is about 87.4 kg one way.
What should you check before leaving?
Before you leave, expect Showers And Thunderstorms Likely around Saint John and Showers And Thunderstorms near Portage.
Stop Ideas Near Speedway
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Avon Town Hall Park
Woodruff Place Town Hall
City Centre
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Speedway.
Indianapolis Union Station
Crawfordsville
Crawfordsville (Bus), Indiana
Lafayette station
Flight Path Map
This map shows the direct air route between Saint John and Portage. Straight-line distance: 242.03 mi (389.51 km).
#1 Saint John
Town in Indiana, United States
| Population | 19,616 |
| Coordinates | 38.0792100, -87.4500100 |
| Altitude | 131 |
| 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: 449 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 09h 17m |
| 40 mph (64.37 km/h) | 06h 58m |
| 50 mph (80.47 km/h) | 05h 34m |
| 60 mph (96.56 km/h) | 04h 38m |
| 70 mph (112.65 km/h) | 03h 59m |
| 80 mph (129 km/h) | 03h 28m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $37.11 | $74.21 |
| Mid-grade | $4.25 | $41.85 | $83.70 |
| Premium | $4.65 | $45.80 | $91.59 |
| Diesel | $5.30 | $52.19 | $104.38 |
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 · Apr 18, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.