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Create accountDrive Time
4h 2m
Distance
225.5 mi
363 km
Drive Score
8/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$36
one way
EV Charging
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station data
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Helena, MT
Paul Campbell
The drive from Helena, MT to Chinook, MT covers 225.5 miles and takes about 4h 2m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on 15th Street Northeast, First Special Service Force Memorial Highway, US 2 for much of the mileage, and the overall profile is turn-heavy local drive. The longest uninterrupted segment is about 107.3 miles on 15th Street Northeast. At current regular gas prices, budget about $35.73 one way before food or hotel costs.
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
112.8 miles from Helena, MT
A natural place for your longest stop of the day , about 1h 56m into the drive .
Expect a 4h 2m drive with frequent turns across 225.5 miles of local and secondary roads.
Gently rolling terrain
Total Climb
339 ft
Total Descent
1,911 ft
Highest Point
4,048 ft
Elevation Range
1,572 ft
Expect a hands-on drive with frequent turns and local roads rather than long highway stretches. You will hit about 8 points where you need to pay attention to lane position or signs. The trickiest moment comes early in the drive near I 15 Business / North Last Chance Gulch Street.
Moderate - straightforward overall, but long enough or busy enough to require pacing
This drive requires moderate attention. Across 225.5 miles you will encounter 8 spots where lane choice or exit timing matters. Not difficult for experienced highway drivers, but worth previewing the tricky sections before you go.
Where does it get tricky?
The main spots that need attention: near the start (I 15 Business / North Last Chance Gulch Street): Lane positioning matters here; at 1.1 miles (I 15 Business / North Last Chance Gulch Street): Highway fork - watch signs carefully; at 2.2 miles (I 15; US 287 / First Special Service Force Memorial Highway): Merge point - match speed before joining. Lane positioning matters here.
These are the spots where you need to pay the most attention. Preview them before you drive.
Turn slight right onto I 15 Business / North Last Chance Gulch Street
Lane positioning matters here
Keep slight right at fork onto I 15 Business / North Last Chance Gulch Street
Highway fork - watch signs carefully
Merge onto I 15; US 287 / First Special Service Force Memorial Highway
Merge point - match speed before joining. Lane positioning matters here
Keep slight right at fork
Highway fork - watch signs carefully
Turn right onto Indiana Street
Navigation decision point
| Road | Distance | Duration |
|---|---|---|
| 15th Street Northeast | 107.3 mi | 1h 58m |
| First Special Service Force Memorial Highway | 86.7 mi | 1h 23m |
| US 2 | 24.7 mi | 28m |
| 3rd Street Northwest | 1.4 mi | 1m |
| North Last Chance Gulch Street | 1.2 mi | 3m |
| Central Avenue West | 1.2 mi | 1m |
| Old Havre Highway | 0.9 mi | 1m |
| Cedar Street | 0.7 mi | 1m |
Step-by-step road directions between Helena, MT and Chinook, MT.
Start on I 15 Business
Turn slight right onto I 15 Business
Keep slight right at fork onto I 15 Business
Continue on Cedar Street
Take the ramp onto I 15 Business
Merge onto I 15; US 287
Take the exit
Keep slight right at fork
Merge onto I 15 Business
Turn left onto 3rd Street Northwest
Continue on Smelter Avenue Northeast
Turn left onto Old Havre Highway
Turn left onto US 87
Turn right onto US 2
Continue on US 2
Turn right onto Indiana Street
Arrive at destination
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.
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 80 miles or 1h 20m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 112.8 miles or 1h 56m 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 16m
Traffic, exits, and arrival timing usually matter more near Chinook, MT than in the middle of the route.
Open the route before leaving Helena, MT 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 Helena, MT
This is one driving day of about 225.5 miles and 4h 2m.
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 112.8 mi from Helena, MT · 1h 56m into the drive
Mid-route town
Meal stop
113 mi into the route
Best for: Lunch, fuel, and a longer reset
This sits close to the middle of the route, so it works well for the longest stop of the day.
A short stop after about 80 miles helps settle the day before fatigue starts building.
The midpoint is around 112.8 miles from Helena, MT, which is a good place for a longer meal and fuel stop.
Before the longest stretch
Fuel checkTop up before 15th Street Northeast if your tank is already low. That segment runs about 107.3 miles.
The final approach into Chinook, MT usually feels slower than the middle of the drive, so avoid planning your tightest schedule at the very end.
Try to arrive with enough fuel left to skip an immediate station stop unless you already know the area around Chinook, MT.
After long uninterrupted mileage, take five minutes before the last urban segment to reset and refocus on exits, merges, and city traffic.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Regular Gas
$35.73 one way
$71.47 round trip
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.23 | $37.56 | $75.13 |
| premium | $4.53 | $40.21 | $80.42 |
| diesel | $5.64 | $50.10 | $100.20 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$36
Meals
$25–$50
Total
$61–$86
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 78.9 kg one way. Prices: EIA weekly data, 2026-04-06.
Driving Electric?
About $24 in charging · 0 stops · 67% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 67.6 | 0 | $23.68 | $10.82 |
| Efficient EV | 56.4 | 0 | $19.73 | $9.02 |
| EV Truck/SUV | 90.2 | 1 | $31.57 | $14.43 |
Gas CO2
79 kg
EV CO2
26 kg (67% 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.
Current conditions at both ends of the drive.
Origin
Evening in Helena on Sunday
Local time
7:22 PM
MDT
Current temp
38°F
Partly Cloudy
Destination
Evening in Chinook on Sunday
Local time
7:22 PM
MDT
Current temp
27°F
Unavailable
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
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
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.
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