Connecting Billings to Clancy, this 243.6-mile trek across Montana is a straightforward journey typically taking about 4 hours and 15 minutes. Because the route is compact, you can easily complete it in a single day, leaving you plenty of time at your destination. With a fuel budget of approximately $39, it remains an affordable trip through the Mountain West. You will spend the vast majority of your time on major transit arteries, making this a reliable choice for travelers who prefer a predictable drive. Whether you are heading west for business or a change of scenery, this route offers a practical link between these two Montana locations.
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
121.8 miles from Billings, MT
A natural place for your longest stop of the day
, about 2h 3m into the drive
.
Main Roads
Road
Distance
Duration
I 90
170.2 mi
2h 48m
Highway 287
58.1 mi
1h 4m
I 15
5.1 mi
4m
Montana Highway 518
3.3 mi
4m
Montana Avenue
1.5 mi
2m
Laurel Road
1.4 mi
2m
Montana Route 518
1.2 mi
1m
1st Avenue North
0.9 mi
3m
Longest stretch:
I 90
— 170.2 mi, about 2h 48m
Turn-by-Turn Driving Directions
Step-by-step road directions between Billings, MT and Clancy, 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
58 mi·58 min·I 90; US 191
11
Take the exit
0.3 mi·37 sec
Toward US 287: Helena, Ennis
12
Turn right onto US 287
58 mi·1 hr 4 min·Highway 287
Use the straight / right lanes.
13
Turn left onto S 518
1.2 mi·1 min·Montana Route 518
Use the left lane.
14
Continue on S 518
3.3 mi·4 min·Montana Highway 518
15
Take the ramp
0.3 mi·37 sec
Toward Butte
16
Merge onto I 15
5.1 mi·4 min·I 15
17
Take the exit
0.2 mi·31 sec
Exit 182Toward Clancy
18
Turn right onto Railroad Way
0.3 mi·44 sec·Railroad Way
19
Continue on East Clancy Street
0.1 mi·20 sec·East Clancy Street
20
Turn right onto North Main Street
149 ft·4 sec·North Main Street
21
Arrive at destination
North Main Street
Trip Plan
Planning for this 4-hour and 15-minute drive is simple, though you should account for the single stop recommended to keep your energy up. Since the vast majority of the route is interstate, try to depart early in the morning to avoid any potential peak-hour traffic near the larger hubs. Keep a close eye on your fuel gauge during that long 170.2-mile initial stretch on I-90 to ensure you have enough range before hitting the transition to Highway 287. Because the drive is relatively short, you have the flexibility to make your stop whenever you feel like stretching your legs. Prioritize a mid-route break to ensure you remain alert for the final leg of the trip into Clancy.
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 121.8 miles from Billings, MT, or about 2h 3m into the drive.
The longest continuous stretch on this route runs about 170.2 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 54 miles or 57m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 121.8 miles or 2h 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 3h 25m
Traffic, exits, and arrival timing usually matter more near Clancy, 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 243.6 miles and 4h 15m.
Your first comfortable stop window is around 54 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 170.2 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 13
5 decision points cluster between mile 4 and 237.5 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
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
174.5 mi into trip|~2h 57m in
Take the exit toward US 287: Helena, Ennis
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Toward US 287: Helena, Ennis
5
174.8 mi into trip|~2h 58m in|US 287 / Highway 287
Turn right onto US 287 / Highway 287
Lane positioning matters here
Use the straight / right lanes.
5
233 mi into trip|~4h 2m in|S 518 / Montana Route 518
Turn left onto S 518 / Montana Route 518
Lane positioning matters here
Use the left lane.
5
237.5 mi into trip|~4h 8m in
Take the ramp toward Butte
Navigation decision point
Toward Butte
Fuel & Cost
Regular Gas
$38.60 one way
$77.20 round trip
$4.03/gal25.4 MPG avg85 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.22
$40.46
$80.93
premium
$4.53
$43.45
$86.91
diesel
$5.61
$53.78
$107.57
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$39
Meals
$25–$50
Total
$64–$89
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 85.2 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $26 in charging
· 0 stops
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
73.1
0
$25.58
$11.69
Efficient EV
60.9
0
$21.31
$9.74
EV Truck/SUV
97.4
1
$34.10
$15.59
Gas CO2
85 kg
EV CO2
29 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 12, 2026
Origin
Billings, MT
Night
in Billings on Saturday
Local time
10:34 PM
MDT
Current temp
70°F
Sunny then Slight Chance Showers And Thunderstorms
S 8 mph49% chanceLive forecast
Destination
Clancy, MT
Night
in Clancy on Saturday
Local time
10:34 PM
MDT
Current temp
60°F
Partly Sunny then Slight Chance Showers And Thunderstorms
S 2 to 6 mph78% chanceLive forecast
71°F
Livingston, MT
122 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
10 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 15m 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 trip is defined by its efficiency, with 98% of the journey spent on highways. You will start with a substantial 170.2-mile stretch on I-90, which allows you to maintain a steady pace across the region. Transitioning onto Highway 287 and eventually I-15 adds some variety to your navigation as you shift between interstate and regional highway travel. Expect a high-speed, highway-focused experience that prioritizes directness over technical curves. While the landscape is expansive, the road surface remains consistent, keeping your time behind the wheel focused and uncomplicated.
98% highway — fuel and pacing are the main things to plan.
21 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 170.2 mi on I 90.
How Hard Is This Drive?
4/10
This is a straightforward highway drive that stays mostly on I 90 and Highway 287. There are only a few real navigation decisions along the way. The trickiest moment comes around 4 miles in near I 90 Business.
Driving Effort4/10
Easy - simple navigation with a manageable amount of wheel time
Balances navigation complexity with total wheel time.
This is a straightforward 4h 15m drive. You will face about 13 decision points, but nothing that requires special attention if you follow navigation.
Where does it get tricky?
The main spots that need attention: at 4 miles (I 90 Business): Highway fork - watch signs carefully. Multiple destination signs - pick the right one; at 174.5 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one; at 174.8 miles (US 287 / Highway 287): Lane positioning matters here.
Elevation Profile
Mostly flat terrain
4,128 ft3,231 ft
Total Climb
897 ft
Total Descent
0 ft
Highest Point
4,128 ft
~81.2 mi in
Elevation Range
897 ft
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
On the drive from Billings, MT to Clancy, MT, road signs begin pointing toward Ennis along the way.
Ennis
174.5 mi in|~2h 57m
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 4h 15m. Total distance: 243.6 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
The longest stretch is about 170.2 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 4 miles (I 90 Business): Highway fork - watch signs carefully. Multiple destination signs - pick the right one; at 174.5 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one; at 174.8 miles (US 287 / Highway 287): Lane positioning matters here.
Possible but tiring. At 4.3 hours each way, an in-and-out day trip would put you behind the wheel for 8.5 hours — manageable with a long break at Clancy, MT, but most travelers stay overnight.
