How far is Boulder, MT from Havre, MT?
The driving distance from Boulder, MT to Havre, MT is about 230.3 miles (370.7 km), with a travel time of about 03h 40m by car.
- The straight-line flight distance is about 196.3 miles (315.9 km).
- For a round trip, plan for roughly 07h 20m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 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 03h 40m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
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 Cascade County, Montana, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Rain And Snow
Driving Route Map
The map below follows the saved road route between Boulder and Havre.
Turn-by-Turn Driving Directions
Step-by-step road directions between Boulder and Havre.
-
1
Start on West Centennial Avenue
112 m · 16 sec · West Centennial Avenue
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2
Turn left onto North Main Street
1.1 km · 1 min · North Main Street
-
3
Take the ramp right toward Helena
1284 ft · 31 sec
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4
Merge slight left
114.7 mi · 1 hr 50 min
-
5
Take the exit slight right
1262 ft · 31 sec
-
6
Keep slight right
70 m · 6 sec
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7
Merge slight left onto Central Avenue West
1.2 mi · 1 min · Central Avenue West
-
8
Turn left onto 3rd Street Northwest
1.4 mi · 2 min · 3rd Street Northwest
-
9
Continue on Smelter Avenue Northeast
2885 ft · 45 sec · Smelter Avenue Northeast
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10
Turn left onto Old Havre Highway
1.4 km · 1 min · Old Havre Highway
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11
Turn left onto 15th Street Northeast
107.3 mi · 1 hr 58 min · 15th Street Northeast
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12
Turn right
3 mi · 4 min
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13
Turn right onto 1st Avenue
1661 ft · 1 min · 1st Avenue
-
14
Turn right onto 5th Street
128 m · 20 sec · 5th Street
-
15
Turn right onto Montana Avenue
49 m · 7 sec · Montana Avenue
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16
Arrive at your destination
0 m · 1 sec · Montana Avenue
Car Route Details
A richer read on the saved driving route between Boulder and Havre.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
Helena
Merge slight left
115 mi · 01h 50m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Light Snow leaving Boulder and Chance Rain And Snow near Havre.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Boulder to Havre?
The road trip is about 230.3 miles (370.7 km) and usually takes 03h 40m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Great Falls is a useful midpoint, sitting about 115.3 miles from Boulder and 115.1 miles from Havre.
How much longer is the road route than the straight-line distance?
The direct path is about 196.3 miles (315.9 km), while the road route adds roughly 34 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 8:00 AM MDT. If you want a more comfortable same-day return, try to leave by 9:40 AM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $31.65 one way or $63.30 round trip. Estimated CO2 is about 72.3 kg one way.
What should you check before leaving?
Before you leave, expect Light Snow around Boulder and Chance Rain And Snow near Havre.
Stop Ideas Near Great Falls
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Statue of Liberty Replica
Great Falls City Attorney's Office
Cascade County Treasurer
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Great Falls.
Shelby
Flight Path Map
This map shows the direct air route between Boulder and Havre. Straight-line distance: 196.29 mi (315.9 km).
#1 Boulder
Town in Montana
| Population | 1,291 |
| Coordinates | 46.2365900, -112.1208300 |
| Altitude | 1496 |
| Country | United States |
#2 Havre
City in Hill County, Montana, United States
| Population | 9,706 |
| Coordinates | 48.5500000, -109.6840900 |
| Altitude | 771 |
| Country | United States |
End: Montana Avenue (-109.683848, 48.549988)
Estimated Travel Time
Distance: 371 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 07h 40m |
| 40 mph (64.37 km/h) | 05h 45m |
| 50 mph (80.47 km/h) | 04h 36m |
| 60 mph (96.56 km/h) | 03h 50m |
| 70 mph (112.65 km/h) | 03h 17m |
| 80 mph (129 km/h) | 02h 52m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $31.65 | $63.30 |
| Mid-grade | $4.23 | $34.40 | $68.80 |
| Premium | $4.55 | $36.98 | $73.97 |
| Diesel | $5.41 | $44.00 | $88.00 |
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 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.