How far is Ronan, MT from Billings, MT?
The driving distance from Ronan, MT to Billings, MT is about 399.1 miles (642.3 km), with a travel time of about 06h 08m by car.
- The straight-line flight distance is about 291.6 miles (469.3 km).
- For a round trip, plan for roughly 12h 16m 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 08m.
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 Ronan and Billings.
Turn-by-Turn Driving Directions
Step-by-step road directions between Ronan and Billings.
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1
Start on Main Street Southwest
1090 ft · 50 sec · Main Street Southwest
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2
Turn right
46.8 mi · 55 min
-
3
Continue on West Broadway Street
925 ft · 24 sec · West Broadway Street
-
4
Continue on West Broadway Street
733 ft · 18 sec · West Broadway Street
-
5
Take the exit slight right toward I 90 East: Missoula
124.6 mi · 2 hr
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6
Keep slight right
110.8 mi · 1 hr 51 min
-
7
Continue straight
6.9 mi · 6 min
-
8
Continue straight
105.3 mi · 1 hr 45 min
-
9
Take the exit slight right toward I 90 Business: West Billings
1948 ft · 48 sec
-
10
Keep slight left to continue on I 90 Business: City Center
1.7 mi · 3 min
-
11
Keep slight left to continue on Montana Avenue
1.3 mi · 2 min · Montana Avenue
-
12
Continue on Montana Avenue
1.4 km · 3 min · Montana Avenue
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13
Arrive at your destination
0 m · 1 sec · Montana Avenue
Car Route Details
A richer read on the saved driving route between Ronan and Billings.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
I 90 East
Take the exit slight right toward I 90 East: Missoula
125 mi · 02h 00m
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.
Sunny leaving Ronan and Mostly Sunny near Billings.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Ronan to Billings?
The road trip is about 399.1 miles (642.3 km) and usually takes 06h 08m 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 Ronan and 199.9 miles from Billings.
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 107.5 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 Sunny around Ronan and Mostly Sunny near Billings.
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 Ronan and Billings. Straight-line distance: 291.62 mi (469.32 km).
#2 Billings
The most populous city in Montana.
| Population | 117,445 |
| Coordinates | 45.7832900, -108.5006900 |
| Altitude | 952 |
| Country | United States |
End: Montana Avenue (-108.500696, 45.783296)
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.