Koontz Lake, IN to Saint Joseph, IN is 238.3 miles and takes about 4h 57m via US 31 and I-65/I-69, with a fuel budget near $37 and enough daylight to finish in a day. This trip stays within the Midwest, entirely within Indiana, making it a straightforward drive. Expect a highway-focused experience for most of the journey, offering a direct path between these two points. With a recommended single day for completion, this route is ideal for those looking for an efficient way to travel between these Indiana locations without extensive planning.
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
119.1 miles from Koontz Lake, IN
A natural place for your longest stop of the day
, about 2h 35m into the drive
.
Main Roads
Road
Distance
Duration
US 31
100.5 mi
2h 5m
I 65
87 mi
1h 33m
I 69
13.6 mi
15m
US 30
12.2 mi
16m
Keystone Parkway
5.2 mi
7m
I 465
4 mi
4m
Perry Crossing Road
2.7 mi
6m
South Emerson Avenue
2.6 mi
4m
Longest stretch:
US 31
— 100.5 mi, about 2h 5m
Turn-by-Turn Driving Directions
Step-by-step road directions between Koontz Lake, IN and Saint Joseph, IN.
1
Start on North Tecumseh Road
0.3 mi·1 min·North Tecumseh Road
2
Continue on East Tippecanoe Drive
0.2 mi·43 sec·East Tippecanoe Drive
3
At end of road, turn left onto SR 23
0.9 mi·1 min·SR 23
4
Turn left onto SR 23
2.6 mi·4 min·North 1000 East
5
Continue on SR 23
0.2 mi·29 sec·Lake Street
6
Turn left onto US 30
12 mi·16 min·US 30
7
Take the exit
0.5 mi·1 min
Toward US 31 South
8
Merge onto US 31
4.1 mi·5 min·US 31
9
Merge onto US 31
0.9 mi·1 min·US 31
10
Turn slight right
512 ft·6 sec
11
Continue on US 31
85 mi·1 hr 44 min·US 31
12
Turn right onto East 226th Street
270 ft·10 sec·East 226th Street
13
Turn left
320 ft·50 sec
14
Continue on this road
320 ft·25 sec·this road
15
Turn right onto East 226th Street
270 ft·9 sec·East 226th Street
16
Turn right onto US 31
8.0 mi·10 min·US 31
17
Take the exit
0.2 mi·28 sec
Exit 129BToward Keystone Parkway, Rangeline Road, Clay Terrace BoulevardUse the slight right lane.
18
Keep slight left at fork onto Keystone Parkway
5.2 mi·7 min·Keystone Parkway
Toward Keystone ParkwayUse the straight / slight right lanes.
19
Enter roundabout
137 ft·7 sec
Toward I 465: South Keystone Avenue
20
Continue
0.3 mi·32 sec
Toward I 465: South Keystone Avenue
21
Keep slight left at fork
430 ft·10 sec
Toward I 465 East: Keystone Avenue South
22
Keep slight right at fork
0.8 mi·2 min
Toward I 465 EastUse the slight left / right lanes.
23
Merge onto I 465
4.0 mi·4 min·I 465
24
Merge onto I 69; I 465
11 mi·12 min·I 69; I 465
Use the straight / slight right lanes.
25
Continue on I 69; I 74; I 465
2.3 mi·2 min·I 69; I 74; I 465
26
Take the exit
0.2 mi·31 sec
Exit 52Toward Emerson AvenueUse the straight / slight right lanes.
27
Keep slight left at fork
0.2 mi·28 sec
Use the slight left / slight right lanes.
28
Turn straight onto South Emerson Avenue
2.6 mi·4 min·South Emerson Avenue
Use the straight lane.
29
Turn right onto East Southport Road
0.5 mi·52 sec·East Southport Road
30
Take the ramp
0.3 mi·43 sec
31
Merge onto I 65
87 mi·1 hr 33 min·I 65
32
Take the exit
0.2 mi·26 sec
Exit 16Toward Memphis Road
33
Turn left onto Memphis-Blue Lick Road
0.7 mi·1 min·Memphis-Blue Lick Road
34
Turn right onto US 31
2.9 mi·4 min·US 31
35
Turn right onto Perry Crossing Road
2.7 mi·6 min·Perry Crossing Road
36
At end of road, turn right onto SR 60
0.2 mi·25 sec·State Road 60
37
Turn left onto State Road 111
1.8 mi·3 min·State Road 111
38
Arrive at destination
Grant Line Road
Trip Plan
Given the 4h 57m estimated drive time and 238.3-mile distance, this trip is comfortably achievable in a single day. Aim to depart in the morning to allow for any unforeseen delays and ensure you arrive with ample daylight. The longest continuous stretch on US 31 is over 100 miles, so plan your fuel and rest stops accordingly before embarking on that segment. While the route is efficient, keeping an eye on your fuel gauge is always wise, especially on longer highway stretches like those found here.
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 119.1 miles from Koontz Lake, IN, or about 2h 35m into the drive.
The longest continuous stretch on this route runs about 100.5 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 52 miles or 1h 9m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 119.1 miles or 2h 35m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 4h 4m
Traffic, exits, and arrival timing usually matter more near Saint Joseph, IN than in the middle of the route.
Before You Leave
+
Open the route before leaving Koontz Lake, 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 Koontz Lake, IN
This is one driving day of about 238.3 miles and 4h 57m.
Your first comfortable stop window is around 52 miles from Koontz Lake, 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 US 31 for about 100.5 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 29
5 decision points cluster between mile 114.8 and 139.2 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
8
114.8 mi into trip|~2h 28m in
Take the exit toward Keystone Parkway, Rangeline Road, Clay Terrace Boulevard
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 129B
Toward Keystone Parkway, Rangeline Road, Clay T...
7
115 mi into trip|~2h 29m in|Keystone Parkway
Keep slight left at fork onto Keystone Parkway toward Keystone Parkway
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
Toward Keystone Parkway
7
120.6 mi into trip|~2h 38m in
Keep slight right at fork toward I 465 East
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left / right lanes.
Toward I 465 East
7
139 mi into trip|~3h in
Take the exit toward Emerson Avenue
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the straight / slight right lanes.
Exit 52
Toward Emerson Avenue
7
139.2 mi into trip|~3h 1m in
Keep slight left at fork
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left / slight right lanes.
Fuel & Cost
Regular Gas
$37.26 one way
$74.51 round trip
$3.97/gal25.4 MPG avg83 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.36
$40.91
$81.81
premium
$4.89
$45.86
$91.72
diesel
$5.61
$52.61
$105.23
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$37
Meals
$25–$50
Total
$62–$87
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 83.4 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $25 in charging
· 0 stops
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
71.5
0
$25.02
$11.44
Efficient EV
59.6
0
$20.85
$9.53
EV Truck/SUV
95.3
1
$33.36
$15.25
Gas CO2
83 kg
EV CO2
28 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 Apr 15, 2026
Origin
Koontz Lake, IN
Night
in Koontz Lake on Saturday
Local time
11:48 PM
CDT
Current temp
71°F
Unavailable
Live forecast
Destination
Saint Joseph, IN
Late night
in Saint Joseph on Sunday
Local time
12:48 AM
EDT
Current temp
42°F
Unavailable
Live forecast
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 later
The destination clock does not match departure time, so double-check hotel check-in windows and late arrival plans.
Temperature spread
29 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 57m 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.
More Details
What kind of drive is this?
This drive is predominantly a highway-focused experience, with 94% of the route utilizing major roadways. You'll encounter stretches of US 31, including a notable 100.5-mile segment, before transitioning to the interstate system with I-65 and I-69. The character of the drive is largely dictated by these high-speed corridors, suggesting a consistent pace and minimal traffic disruptions. While not explicitly a scenic byway, the efficiency of the highway network makes it a practical choice for covering ground quickly.
94% highway — fuel and pacing are the main things to plan.
38 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 100.5 mi on US 31.
How Hard Is This Drive?
10/10
This is a straightforward highway drive that stays mostly on US 31 and I 65. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 114.8 miles in.
Driving Effort10/10
High effort - long or complex enough to need steady focus all day
Balances navigation complexity with total wheel time.
This is a demanding drive. With 29 significant decision points across 238.3 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 114.8 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 115 miles (Keystone Parkway): Highway fork - watch signs carefully. Lane positioning matters here; at 120.6 miles: Highway fork - watch signs carefully. Lane positioning matters here.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 4h 57m. Total distance: 238.3 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
4h 57m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (94%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 100.5 miles on US 31. The full list of main roads is in the Roads section above.
We did not find dedicated rest areas on this route. For a drive this long, plan bathroom and stretch breaks around gas stations, fast-food stops, or small-town downtowns — check the Nearby Places section for options.
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 Saint Joseph, 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. Dedicated rest areas are limited, so plan gas or food stops as your bathroom breaks.
The main spots that need attention: at 114.8 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 115 miles (Keystone Parkway): Highway fork - watch signs carefully. Lane positioning matters here; at 120.6 miles: Highway fork - watch signs carefully. Lane positioning matters here.
Possible but tiring. At 5.0 hours each way, an in-and-out day trip would put you behind the wheel for 9.9 hours — manageable with a long break at Saint Joseph, IN, but most travelers stay overnight.
