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Create accountDrive Time
6h 31m
Distance
370.2 mi
596 km
Drive Score
8/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$59
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.
Big Timber, MT
John De Leon
Evergreen, MT
Shashank Brahmavar
Spanning 370.2 miles across the heart of the Mountain West, this trip from Big Timber to Evergreen is a significant drive that takes approximately 6 hours and 31 minutes. You will spend 99% of your time on highways, primarily utilizing I-90, MT-83, and MT-141 to bridge the distance. While it is technically feasible to complete this trek in a single day, be prepared for a long stint behind the wheel. Budgeting around $59 for fuel is a smart way to prepare for the journey. Since the route stays entirely within Montana, you can expect a consistent regional feel as you transition between these two areas. This drive is best suited for travelers who prefer highway-focused efficiency over frequent detours.
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
185.1 miles from Big Timber, MT
A natural place for your longest stop of the day , about 3h 3m into the drive .
Expect a drive defined by high-speed efficiency, as the route is 99% highway-focused. You will begin with a substantial 190.1-mile stretch along I-90, which allows you to cover significant ground before transitioning onto MT-83 and MT-141. These secondary roads shift the pace, offering a different rhythm compared to the interstate grind. While the majority of the route is designed for steady progress, the shift between road types keeps the experience from feeling entirely monotonous. You will spend most of your time focused on the pavement, so ensure your vehicle is ready for a solid day of interstate travel.
Mostly flat terrain
Total Climb
647 ft
Total Descent
0 ft
Highest Point
4,738 ft
~61.7 mi in
Elevation Range
647 ft
This is a straightforward highway drive that stays mostly on I 90 and MT 83. There are only a few real navigation decisions along the way. The trickiest moment comes early in the drive near I 90 Business; US 191 / West 1st Avenue.
Easy - simple navigation with a manageable amount of wheel time
The route itself is not hard, but at 6h 31m, endurance matters. Plan breaks every 2-3 hours. The 14 decision points are all manageable with basic attention.
Where does it get tricky?
The main spots that need attention: near the start (I 90 Business; US 191 / West 1st Avenue): Navigation decision point; at 149 miles (I 90): Highway fork - watch signs carefully; at 191.6 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
These are the spots where you need to pay the most attention. Preview them before you drive.
Turn right onto I 90 Business; US 191 / West 1st Avenue
Navigation decision point
Keep slight left at fork onto I 90 toward I 90 West: Missoula
Highway fork - watch signs carefully
Take the exit toward US 12 East: Helena, Garrison
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
At end of road, turn right onto US 12
Navigation decision point
Turn sharp left onto MT 141
Sharp turn - reduce speed on approach
On the drive from Big Timber, MT to Evergreen, MT, road signs begin pointing toward Garrison along the way.
Garrison
| Road | Distance | Duration |
|---|---|---|
| I 90 | 190.1 mi | 3h 6m |
| MT 83 | 91.1 mi | 1h 43m |
| MT 141 | 32.5 mi | 35m |
| MT 200 | 23.8 mi | 25m |
| MT 35 | 15.9 mi | 18m |
| US 12 | 12.9 mi | 14m |
| East Evergreen Drive | 1 mi | 2m |
| Big Timber Loop Road | 0.8 mi | 1m |
Step-by-step road directions between Big Timber, MT and Evergreen, MT.
Start on McLeod Street
Turn right onto I 90 Business; US 191
Continue on I 90 Business; US 191
Turn left onto I 90 Business; US 191
Take the ramp onto I 90 Business; US 191
Merge onto I 90; US 191
Continue on I 90; US 89; US 191
Continue on I 90; US 191
Keep slight left at fork onto I 90
Take the exit
At end of road, turn right onto US 12
Turn sharp left onto MT 141
At end of road, turn left onto MT 200
Turn right onto MT 83
At end of road, turn right onto MT 35
Continue on MT 35
Turn right onto Helena Flats Road
Turn left onto East Evergreen Drive
Turn left onto US 2
Arrive at destination
To make the most of this 6-hour and 31-minute journey, plan to depart early in the morning to avoid fatigue during the final stretches. With only one recommended stop, it is essential to time your break strategically to coincide with refueling, keeping your $59 gas budget in mind. Since this is a highway-heavy route, maintain consistent speeds to optimize your fuel efficiency throughout the 370.2 miles. Because the drive is manageable in one day, you have the flexibility to reach your destination by evening if you stay disciplined with your schedule. Always double-check your route map before switching from I-90 to the state highways to ensure a smooth transition.
Morning Departure
Start early — leave by 6-7 AM to arrive at a reasonable hour.
Evening Departure
This is a long drive — plan for a morning departure or consider splitting it into two days.
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 81 miles or 1h 21m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 185.1 miles or 3h 3m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 5h 21m
Traffic, exits, and arrival timing usually matter more near Evergreen, MT than in the middle of the route.
Open the route before leaving Big Timber, 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 Big Timber, MT
This is one driving day of about 370.2 miles and 6h 31m.
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 185.1 mi from Big Timber, MT · 3h 3m into the drive
Mid-route town
Meal stop
185 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 81 miles helps settle the day before fatigue starts building.
The midpoint is around 185.1 miles from Big Timber, MT, which is a good place for a longer meal and fuel stop.
Before the longest stretch
Fuel checkTop up before I 90 if your tank is already low. That segment runs about 190.1 miles.
The final approach into Evergreen, 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 Evergreen, 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
$58.66 one way
$117.33 round trip
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.23 | $61.67 | $123.33 |
| premium | $4.53 | $66.01 | $132.02 |
| diesel | $5.64 | $82.25 | $164.49 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$59
Meals
$25–$50
Total
$84–$109
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 129.5 kg one way. Prices: EIA weekly data, 2026-04-06.
Driving Electric?
About $39 in charging · 1 stop · 67% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 111.1 | 1 | $38.87 | $17.77 |
| Efficient EV | 92.6 | 1 | $32.39 | $14.81 |
| EV Truck/SUV | 148.1 | 1 | $51.83 | $23.69 |
Gas CO2
130 kg
EV CO2
43 kg (67% less)
Plan for 1 charging stop. A 30-minute DC fast charge mid-route should be enough to complete the trip comfortably.
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 Big Timber on Sunday
Local time
5:29 PM
MDT
Current temp
42°F
Mostly Cloudy
Destination
Evening in Evergreen on Sunday
Local time
5:29 PM
MDT
Current temp
39°F
Slight Chance Rain Showers
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
Start early — leave by 6-7 AM to arrive at a reasonable hour.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
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