How far is Billings, MT from Ronan, MT?
The driving distance from Billings, MT to Ronan, MT is about 399 miles (642.2 km), with a travel time of about 06h 46m by car.
- The straight-line flight distance is about 291.6 miles (469.3 km).
- For a round trip, plan for roughly 13h 32m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 7:30 AM MDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 06h 46m.
Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Town in Jefferson County, Montana
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Billings and Ronan.
Turn-by-Turn Driving Directions
Step-by-step road directions between Billings and Ronan.
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1
Start on Montana Avenue
589 ft · 25 sec · Montana Avenue
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2
Turn left onto North 23rd Street
114 m · 22 sec · North 23rd Street
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3
Turn left onto 1st Avenue North
1.5 km · 3 min · 1st Avenue North
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4
Turn left onto Division Street
136 m · 10 sec · Division Street
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5
Continue on Montana Avenue
1.3 mi · 2 min · Montana Avenue
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6
Continue on Laurel Road
1.4 mi · 2 min · Laurel Road
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7
Keep slight right to continue on Butte, I 90 West
1963 ft · 48 sec
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8
Merge slight right
105.4 mi · 1 hr 43 min
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9
Continue straight
7 mi · 7 min
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10
Continue straight
113.4 mi · 1 hr 54 min
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11
Keep slight left to continue on I 90 West: Missoula
121.8 mi · 1 hr 57 min
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12
Take the exit slight right toward US 93 North, MT 200 West: Kalispell
1009 ft · 25 sec
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13
Keep slight right to continue on US 93 North, MT 200 West: Kalispell
46.6 mi · 55 min
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14
Turn left onto Main Street Southwest
1090 ft · 48 sec · Main Street Southwest
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15
Arrive at your destination
0 m · 1 sec · Main Street Southwest
Car Route Details
A richer read on the saved driving route between Billings and Ronan.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
I 90 West
Keep slight left to continue on I 90 West: Missoula
122 mi · 01h 57m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
Better with a longer stop
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
Mostly Sunny leaving Billings and Sunny near Ronan.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Billings to Ronan?
The road trip is about 399 miles (642.2 km) and usually takes 06h 46m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
What is the halfway point on this route?
Whitehall is a useful midpoint, sitting about 199.2 miles from Billings and 199.9 miles from Ronan.
How much longer is the road route than the straight-line distance?
The direct path is about 291.6 miles (469.3 km), while the road route adds roughly 107.4 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 6:00 AM to 7:30 AM MDT. Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $54.81 one way or $109.63 round trip. Estimated CO2 is about 125.1 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Billings and Sunny near Ronan.
Stop Ideas Near Whitehall
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Whitehall.
Butte, MT
Bozeman, MT
Flight Path Map
This map shows the direct air route between Billings and Ronan. Straight-line distance: 291.62 mi (469.32 km).
#1 Billings
The most populous city in Montana.
| Population | 117,445 |
| Coordinates | 45.7832900, -108.5006900 |
| Altitude | 952 |
| Country | United States |
End: Ronan (-114.1015, 47.52882)
Estimated Travel Time
Distance: 642 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 13h 17m |
| 40 mph (64.37 km/h) | 09h 58m |
| 50 mph (80.47 km/h) | 07h 58m |
| 60 mph (96.56 km/h) | 06h 39m |
| 70 mph (112.65 km/h) | 05h 42m |
| 80 mph (129 km/h) | 04h 58m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $54.81 | $109.63 |
| Mid-grade | $4.23 | $59.57 | $119.14 |
| Premium | $4.55 | $64.05 | $128.10 |
| Diesel | $5.41 | $76.20 | $152.40 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in Montana · Apr 18, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.