Sunman, IN to Portage, IN is 226.5 miles and takes about 4h 20m via I 74 and I 65, with a fuel budget near $35 and enough daylight to finish in a day. This trip stays within the Midwest, entirely within Indiana, making it a straightforward hop between two points. Given its highway-heavy nature and manageable duration, it’s a practical option if you need to get from one side of the state to the other efficiently. You'll spend most of your time on major interstates, so expect consistent travel speeds. It's a one-day drive that won't demand an overnight stay.
Trip Pace
Same-day drive is realistic
A same-day return is possible, but it will make for a full day on the road.
Break Rhythm
1 planned break
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
113.2 miles from Sunman, IN
A natural place for your longest stop of the day
, about 2h 11m into the drive
.
Main Roads
Road
Distance
Duration
I 65
147.1 mi
2h 43m
I 74
61.6 mi
1h 5m
Central Avenue
5.7 mi
11m
Southeastern Avenue
5 mi
7m
North Meridian Street
3.1 mi
4m
US 52
0.2 mi
<1m
Dickson Street
0.2 mi
<1m
North Pine Street
0.2 mi
<1m
Longest stretch:
I 65
— 147.1 mi, about 2h 43m
Traffic on I-65
Hour-of-day weekday pattern from 72 FHWA count stations on your route.
Peak
4 PM
~2,104 veh/hr typical
· worst 2,735
Quietest
2 AM
~253 veh/hr
Peak-to-quiet ratio
8.3×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 52 weeks of 2023 FHWA Travel Monitoring Analysis System data. Weekday hours only (Mon–Fri).
Turn-by-Turn Driving Directions
Step-by-step road directions between Sunman, IN and Portage, IN.
1
Start on SR 101
3.1 mi·4 min·North Meridian Street
2
Take the ramp
0.2 mi·24 sec
Toward I 74 West: Indianapolis
3
Merge onto I 74
62 mi·1 hr 5 min·I 74
Use the straight / slight right lanes.
4
Continue on this road
1.2 mi·1 min·this road
Exit 94Toward Southeastern Avenue
5
Continue on Southeastern Avenue
3.6 mi·5 min·Southeastern Avenue
6
Enter roundabout onto Southeastern Avenue
106 ft·5 sec·Southeastern Avenue
7
Continue on Southeastern Avenue
1.4 mi·2 min·Southeastern Avenue
Use the straight / left / right lanes.
8
Continue on Cruse Street
422 ft·14 sec·Cruse Street
Use the straight / left / right lanes.
9
Turn right onto East Market Street
364 ft·15 sec·East Market Street
10
Turn left onto Dickson Street
526 ft·20 sec·Dickson Street
11
Turn left onto East Ohio Street
129 ft·5 sec·East Ohio Street
12
Turn right onto Dickson Street
0.1 mi·21 sec·Dickson Street
13
Turn left onto East New York Street
0.1 mi·26 sec·East New York Street
14
Turn right onto North Pine Street
0.2 mi·26 sec·North Pine Street
15
Take the ramp
124 ft·3 sec
16
Keep slight right at fork
0.2 mi·30 sec
Toward I 65 North: ChicagoUse the slight right lane.
17
Merge onto I 65
30 mi·35 min·I 65
Use the straight / slight right lanes.
18
Take the exit onto US 52
0.2 mi·15 sec·US 52
Exit 141Toward US 52 West
19
Keep slight left at fork
0.1 mi·9 sec
20
Merge onto I 65
118 mi·2 hr 8 min·I 65
Use the straight / slight right lanes.
21
Take the exit
0.9 mi·1 min
Exit 259BToward I 80 East, I 94 East, US 6 East: Toledo, DetroitUse the slight right lane.
22
Keep slight right at fork
0.3 mi·37 sec
Exit 13Toward Central AvenueUse the slight right lane.
23
Turn right onto Central Avenue
4.3 mi·8 min·Central Avenue
24
Continue on Central Avenue
1.4 mi·3 min·Central Avenue
25
Arrive at destination
Central Avenue
Trip Plan
For this 4h 20m drive, leaving in the morning is ideal to maximize daylight and allow for a relaxed pace. With only one recommended stop and a fuel cost estimated at $35, you can plan your spending easily. The longest stretch without a major road change is 147.1 miles on I 65, so consider refueling before you embark or planning your single stop around the midpoint of that segment. Since this is a single-day trip, you have flexibility; however, be aware that the final approach into Portage will involve surface roads, so allow a little extra time for that transition.
Morning Departure
An early start around 7-8 AM gets you there with plenty of daylight left.
Evening Departure
A late afternoon start means arriving after dark. Morning is better.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 113.2 miles from Sunman, IN, or about 2h 11m into the drive.
The longest continuous stretch on this route runs about 147.1 miles.
This is a comfortable same-day trip.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 50 miles or 55m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 113.2 miles or 2h 11m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 3h 30m
Traffic, exits, and arrival timing usually matter more near Portage, IN than in the middle of the route.
Before You Leave
+
Open the route before leaving Sunman, IN so your first major turns are already loaded.
+
Leave with enough water and a charging cable within reach, not packed away.
+
Check your fuel range against the first long segment, especially if you are starting outside city service areas.
Day 1
Settle into the route from Sunman, IN
This is one driving day of about 226.5 miles and 4h 20m.
Your first comfortable stop window is around 50 miles from Sunman, IN.
This route can stay practical as a one-day drive if traffic stays reasonable.
Plan about 1 real break rather than only quick fuel stops.
The longest stretch is on I 65 for about 147.1 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Place data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
5 of 18
5 decision points cluster between mile 3.3 and 220.4 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
5
3.3 mi into trip|~4m in|I 74
Merge onto I 74
Merge point - match speed before joining. Lane positioning matters here
Use the straight / slight right lanes.
5
71.2 mi into trip|~1h 20m in|East Market Street
Turn right onto East Market Street
Navigation decision point
8
71.9 mi into trip|~1h 22m in
Keep slight right at fork toward I 65 North: Chicago
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight right lane.
Toward I 65 North: Chicago
8
219.6 mi into trip|~4h 7m in
Take the exit toward I 80 East, I 94 East, US 6 East: Toledo, Detroit
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Exit 259B
Toward I 80 East, I 94 East, US 6 East: Toledo,...
8
220.4 mi into trip|~4h 8m in
Keep slight right at fork toward Central Avenue
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight right lane.
Exit 13
Toward Central Avenue
Fuel & Cost
Regular Gas
$33.45 one way
$66.90 round trip
$3.75/gal25.4 MPG avg79 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.14
$36.93
$73.85
premium
$4.72
$42.05
$84.11
diesel
$4.80
$42.77
$85.53
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$33
Meals
$25–$50
Total
$58–$83
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 79.2 kg one way.
Prices: EIA weekly data, 2026-07-13.
Driving Electric?
About $24 in charging
· 0 stops
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
68
0
$23.78
$10.87
Efficient EV
56.6
0
$19.82
$9.06
EV Truck/SUV
90.6
1
$31.71
$14.50
Gas CO2
79 kg
EV CO2
27 kg (66% less)
Plan for 0 charging stops, roughly every 270 miles. Allow 25-40 minutes per stop at a DC fast charger.
DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.
Travel Intel
Current conditions at both ends of the drive.
Forecast as of Jul 18, 2026
Origin
Sunman, IN
Afternoon
in Sunman on Sunday
Local time
1:37 PM
EDT
Current temp
89°F
Chance Showers And Thunderstorms
W 9 mph50% chanceLive forecast
Special Weather Statement
Special Weather Statement issued July 18 at 2:29PM EDT by NWS Northern Indiana
Severe Thunderstorm Watch
Severe Thunderstorm Watch issued July 18 at 12:23PM CDT until July 18 at 7:00PM CDT by NWS Chicago IL
Destination
Portage, IN
Afternoon
in Portage on Sunday
Local time
12:37 PM
CDT
Current temp
87°F
Showers And Thunderstorms Likely
NNW 10 to 15 mph74% chanceLive forecast
Special Weather Statement
Special Weather Statement issued July 18 at 2:29PM EDT by NWS Northern Indiana
Severe Thunderstorm Watch
Severe Thunderstorm Watch issued July 18 at 12:23PM CDT until July 18 at 7:00PM CDT by NWS Chicago IL
84°F
Clermont, IN
113 mi in
Seasonal Notes
Summer travel usually means heavier construction, hotter rest stops, and busier weekend traffic around major cities.
Winter travel shortens daylight, so a route that looks manageable on paper can feel much longer after dark.
Holiday weekends tend to make both departure and arrival windows slower than the raw route time suggests.
Time zone
1 hour earlier
The destination clock does not match departure time, so double-check hotel check-in windows and late arrival plans.
Temperature spread
2 degrees cooler at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
4h 20m on the road
An early start around 7-8 AM gets you there with plenty of daylight left.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
National Parks Near This Route
Worth a detour if your schedule allows.
Indiana Dunes National Park
National Park
Lake Michigan's might has influenced Indiana Dunes for millennia. Wind and waves have shaped the land, leaving a rich mosaic of habitats along these 15 miles of Indiana coast. Over 50 miles of trails...
6 mi from route
~15 min detour
$20
near mile 226.5
Park Closure: Partial Closures to Marquette Greenway Trail and Glenwood Dunes Trail
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This is a predominantly highway drive, with 92% of the route on interstates. You'll experience a long stretch of 147.1 miles on I 65, which means extended periods of consistent cruising. The transition to surface streets like Central Avenue will occur towards the end of your drive, marking the shift from high-speed travel to more local road conditions with potentially more frequent exits and intersections. Expect the majority of your mileage to be on I-74 and I-65.
92% highway — fuel and pacing are the main things to plan.
25 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 147.1 mi on I 65.
How Hard Is This Drive?
8/10
This is a straightforward highway drive that stays mostly on I 65 and I 74. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 3.3 miles in near I 74.
Driving Effort8/10
Demanding - plan breaks and stay ahead of the key maneuvers
Balances navigation complexity with total wheel time.
This is a demanding drive. With 18 significant decision points across 226.5 miles, you will need to stay alert - especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.
Where does it get tricky?
The main spots that need attention: at 3.3 miles (I 74): Merge point - match speed before joining. Lane positioning matters here; at 71.2 miles (East Market Street): Navigation decision point; at 71.9 miles: Highway fork - watch signs carefully. Lane positioning matters here.
Doable as a same-day drive at 4h 20m. Total distance: 226.5 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
4h 20m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (92%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 147.1 miles on I 65. The full list of main roads is in the Roads section above.
Yes — we found about 37 rest areas or service plazas within a short detour of the route (from OpenStreetMap). See the Rest Stops tab under Nearby Places for locations and mile markers. Plan to stretch, use the bathroom, and top off fluids every 2–3 hours on longer drives.
It helps. This route has a higher-than-average number of complex decision points, which get harder in the dark. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at Portage, IN before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Only with planning. This is a long drive for kids — consider splitting it into two days rather than pushing through. Plan at least 1 meaningful breaks. There are 37 rest areas along the route for bathroom stops.
The main spots that need attention: at 3.3 miles (I 74): Merge point - match speed before joining. Lane positioning matters here; at 71.2 miles (East Market Street): Navigation decision point; at 71.9 miles: Highway fork - watch signs carefully. Lane positioning matters here.
Yes — Indiana Dunes National Park. See the National Parks section for detour distances and tips on detours.
Possible but tiring. At 4.3 hours each way, an in-and-out day trip would put you behind the wheel for 8.7 hours — manageable with a long break at Portage, IN, but most travelers stay overnight.
