Spanning 256.1 miles, this cross-state drive from Billings to Dillon typically takes about 4 hours and 45 minutes to complete. Because the trip is straightforward, it is easily manageable as a single-day journey without the need for an overnight stop. You can expect to spend approximately $41 on fuel, making it a budget-friendly way to traverse this portion of the Mountain West. The route primarily utilizes I-90 before transitioning onto Montana Highway 41, offering a direct path between these two Montana hubs. Whether you are traveling for business or a change of scenery, this highway-focused drive provides a predictable and efficient way to reach your destination.
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
128.1 miles from Billings, MT
A natural place for your longest stop of the day
, about 2h 10m into the drive
.
Main Roads
Road
Distance
Duration
I 90
196 mi
3h 12m
West 4th Avenue
27.2 mi
40m
Montana Highway 41
14.4 mi
21m
State Highway 55
9.9 mi
14m
Montana Highway 55
2.1 mi
3m
Montana Avenue
1.5 mi
2m
Laurel Road
1.4 mi
2m
1st Avenue North
0.9 mi
3m
Longest stretch:
I 90
— 196 mi, about 3h 12m
Turn-by-Turn Driving Directions
Step-by-step road directions between Billings, MT and Dillon, MT.
1
Start on I 90 Business
0.1 mi·25 sec·Montana Avenue
2
Turn left onto North 23rd Street
372 ft·21 sec·North 23rd Street
3
Turn left onto I 90 Business
0.9 mi·3 min·1st Avenue North
4
Turn left onto I 90 Business
447 ft·9 sec·Division Street
5
Continue on I 90 Business
1.3 mi·1 min·Montana Avenue
6
Continue on I 90 Business
1.4 mi·2 min·Laurel Road
7
Keep slight right at fork onto I 90 Business
0.4 mi·47 sec·I 90 Business
Toward Butte, I 90 West
8
Merge onto I 90; US 212
105 mi·1 hr 43 min·I 90; US 212
9
Continue on I 90; US 89; US 191
7.0 mi·6 min·I 90; US 89; US 191
10
Continue on I 90; US 191
84 mi·1 hr 22 min·I 90; US 191
11
Take the exit
0.3 mi·41 sec
Toward MT 55: Whitehall
12
Turn left onto MT 55
228 ft·3 sec·Whitetail Road
13
Continue on MT 55
0.6 mi·52 sec·North Whitehall Street
14
At end of road, turn right onto MT 2; MT 55
0.4 mi·39 sec·West Legion Avenue
15
Turn left onto MT 55
9.6 mi·14 min·State Highway 55
16
Turn straight onto MT 55
0.3 mi·27 sec·State Highway 55
17
Continue on MT 55
2.1 mi·3 min·Montana Highway 55
18
Continue on MT 41
14 mi·21 min·Montana Highway 41
19
Turn right onto MT 41
27 mi·40 min·West 4th Avenue
20
Continue on I 15 Business
0.7 mi·1 min·Montana Street
21
Turn left onto I 15 Business
356 ft·15 sec·East Helena Street
22
Turn right onto North Idaho Street
0.2 mi·43 sec·North Idaho Street
23
Arrive at destination
South Idaho Street
Trip Plan
To keep your drive smooth, plan for at least one dedicated stop to stretch your legs during the 256.1-mile trek. Since the longest segment on I-90 spans 196 miles, ensure your tank is topped off before leaving Billings to comfortably cover your $41 fuel estimate. Leaving early in the morning is your best bet to beat potential traffic and ensure you arrive in Dillon with plenty of daylight left. Given the route's flexibility, you have the advantage of adjusting your pace based on your own comfort levels. Keep a close eye on your mileage after exiting the interstate, as the transition to Montana Highway 41 marks the final phase of your arrival.
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 128.1 miles from Billings, MT, or about 2h 10m into the drive.
The longest continuous stretch on this route runs about 196 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 56 miles or 59m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 128.1 miles or 2h 10m 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 36m
Traffic, exits, and arrival timing usually matter more near Dillon, MT than in the middle of the route.
Before You Leave
+
Open the route before leaving Billings, 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 Billings, MT
This is one driving day of about 256.1 miles and 4h 45m.
Your first comfortable stop window is around 56 miles from Billings, MT.
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 90 for about 196 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 11
5 decision points cluster between mile 0.1 and 255.9 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
4
0.1 mi into trip|~0m in|North 23rd Street
Turn left onto North 23rd Street
Navigation decision point
4
0.2 mi into trip|~0m in|I 90 Business / 1st Avenue North
Turn left onto I 90 Business / 1st Avenue North
Navigation decision point
6
4 mi into trip|~8m in|I 90 Business
Keep slight right at fork onto I 90 Business toward Butte, I 90 West
Highway fork - watch signs carefully. Multiple destination signs - pick the right one
Toward Butte, I 90 West
5
200.6 mi into trip|~3h 22m in|MT 55 / Whitetail Road
Turn left onto MT 55 / Whitetail Road
Navigation decision point
5
255.9 mi into trip|~4h 45m in|North Idaho Street
Turn right onto North Idaho Street
Navigation decision point
Fuel & Cost
Regular Gas
$40.58 one way
$81.17 round trip
$4.03/gal25.4 MPG avg90 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.22
$42.54
$85.08
premium
$4.53
$45.68
$91.37
diesel
$5.61
$56.54
$113.09
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$41
Meals
$25–$50
Total
$66–$91
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 89.6 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $27 in charging
· 0 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
76.8
0
$26.89
$12.29
Efficient EV
64
0
$22.41
$10.24
EV Truck/SUV
102.4
1
$35.85
$16.39
Gas CO2
90 kg
EV CO2
30 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.
Travel Intel
Current conditions at both ends of the drive.
Forecast as of Apr 12, 2026
Origin
Billings, MT
Late night
in Billings on Tuesday
Local time
4:48 AM
MDT
Current temp
70°F
Sunny then Slight Chance Showers And Thunderstorms
S 8 mph49% chanceLive forecast
Destination
Dillon, MT
Late night
in Dillon on Tuesday
Local time
4:48 AM
MDT
Current temp
61°F
Slight Chance Light Rain then Showers And Thunderstorms Likely
S 5 to 15 mph63% chanceLive forecast
48°F
Livingston, MT
128 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
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
9 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 45m 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?
Expect a trip dominated by high-speed transit, with 87% of the journey spent on major highways. You will spend the bulk of your time on I-90, which features a long, uninterrupted stretch of 196 miles that allows for steady cruising. Once you peel off the interstate, the character of the road shifts as you navigate West 4th Avenue and eventually connect to Montana Highway 41. This transition moves you from the heavy flow of interstate traffic to a more localized driving experience. It is a functional, highway-focused route that prioritizes speed and efficiency over complex navigation.
87% highway — fuel and pacing are the main things to plan.
23 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 196 mi on I 90.
How Hard Is This Drive?
3/10
This is a straightforward highway drive that stays mostly on I 90 and West 4th Avenue. There are only a few real navigation decisions along the way. The trickiest moment comes around 0.1 miles in near North 23rd Street.
Driving Effort3/10
Easy - simple navigation with a manageable amount of wheel time
Balances navigation complexity with total wheel time.
This is a straightforward 4h 45m drive. You will face about 11 decision points, but nothing that requires special attention if you follow navigation.
Where does it get tricky?
The main spots that need attention: at 0.1 miles (North 23rd Street): Navigation decision point; at 0.2 miles (I 90 Business / 1st Avenue North): Navigation decision point; at 4 miles (I 90 Business): Highway fork - watch signs carefully. Multiple destination signs - pick the right one.
Billings is the largest city in Montana in Yellowstone County, with an estimated 110,000 people (2019). As a destination, Billings does a significant amount of convention business and is also the host to various regional events such as music festivals, athletic contests, rodeos, and outdoor activities. Billings hosts the largest hospitals in a 500-mile radius, as such the medical profession is a major source of employment in the area. Billings is also a frequent overnight or meal stop for westbound visitors to Yellowstone National Park, as it is the last major city for visitors going to the park via the Beartooth Highway.
The longest stretch is about 196 miles on I 90. 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.
Yes, with realistic expectations. Build in a stop roughly every 2 hours, have snacks and activities ready, and check the Nearby Places tabs for kid-friendly stops along the way.
Mostly yes along the main roads, but rural stretches through MT can have sparse or no coverage. Before you leave, download offline Google Maps or Apple Maps for the route, and consider downloading music or podcasts instead of streaming. If you depend on data for navigation, keep a paper backup of the turn-by-turn directions.
The main spots that need attention: at 0.1 miles (North 23rd Street): Navigation decision point; at 0.2 miles (I 90 Business / 1st Avenue North): Navigation decision point; at 4 miles (I 90 Business): Highway fork - watch signs carefully. Multiple destination signs - pick the right one.
Possible but tiring. At 4.8 hours each way, an in-and-out day trip would put you behind the wheel for 9.5 hours — manageable with a long break at Dillon, MT, but most travelers stay overnight.
