How far is Boulder, MT from Kalispell, MT?
The driving distance from Boulder, MT to Kalispell, MT is about 223 miles (358.9 km), with a travel time of about 03h 53m by car.
- The straight-line flight distance is about 170 miles (273.6 km).
- For a round trip, plan for roughly 07h 47m 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 53m.
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.
Census designated place in Montana, USA
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Light Rain then Showers And Thunderstorms
Chance Light Rain then Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Boulder and Kalispell.
Turn-by-Turn Driving Directions
Step-by-step road directions between Boulder and Kalispell.
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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
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3
Take the ramp right toward Helena
1284 ft · 31 sec
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4
Merge slight left
27.8 mi · 26 min
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5
Take the exit slight right toward Cedar Street
1483 ft · 44 sec
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6
Turn left onto Cedar Street
1.3 km · 2 min · Cedar Street
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7
Continue on North Last Chance Gulch Street
1.3 km · 2 min · North Last Chance Gulch Street
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8
Turn right onto West Lyndale Avenue
2353 ft · 1 min · West Lyndale Avenue
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9
Continue on Euclid Avenue
29.8 mi · 35 min · Euclid Avenue
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10
Turn right
32.5 mi · 35 min
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11
At the end of the road, turn left
23.8 mi · 26 min
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12
Turn right
91.1 mi · 1 hr 44 min
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13
At the end of the road, turn right
1821 ft · 39 sec
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14
Turn left
6.9 mi · 9 min
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15
Turn right onto US 93 South
7.1 mi · 9 min · US 93 South
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16
Turn right onto 1st Avenue East
1.3 km · 2 min · 1st Avenue East
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17
Turn left onto 3rd Street East
130 m · 14 sec · 3rd Street East
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18
Arrive at your destination
0 m · 1 sec · 3rd Street West
Car Route Details
A richer read on the saved driving route between Boulder and Kalispell.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
Longest stretch
Turn right
91.1 mi · 01h 44m
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.
Chance Light Rain then Showers And Thunderstorms leaving Boulder and Chance Light Rain then Showers And Thunderstorms near Kalispell.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Boulder to Kalispell?
The road trip is about 223 miles (358.9 km) and usually takes 03h 53m 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?
Seeley Lake is a useful midpoint, sitting about 111.7 miles from Boulder and 111.3 miles from Kalispell.
How much longer is the road route than the straight-line distance?
The direct path is about 170 miles (273.6 km), while the road route adds roughly 53 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 9:12 AM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $30.64 one way or $61.28 round trip. Estimated CO2 is about 69.9 kg one way.
What should you check before leaving?
Before you leave, expect Chance Light Rain then Showers And Thunderstorms around Boulder and Chance Light Rain then Showers And Thunderstorms near Kalispell.
Stop Ideas Near Seeley Lake
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 Seeley Lake.
Missoula, MT
Flight Path Map
This map shows the direct air route between Boulder and Kalispell. Straight-line distance: 170.01 mi (273.6 km).
#1 Boulder
Town in Montana
| Population | 1,291 |
| Coordinates | 46.2365900, -112.1208300 |
| Altitude | 1496 |
| Country | United States |
#2 Kalispell
City in Flathead County, Montana, United States
| Population | 25,329 |
| Coordinates | 48.1957900, -114.3129100 |
| Altitude | 901 |
| Country | United States |
End: 3rd Street West (-114.312918, 48.195812)
Estimated Travel Time
Distance: 359 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 07h 25m |
| 40 mph (64.37 km/h) | 05h 34m |
| 50 mph (80.47 km/h) | 04h 27m |
| 60 mph (96.56 km/h) | 03h 43m |
| 70 mph (112.65 km/h) | 03h 11m |
| 80 mph (129 km/h) | 02h 46m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $30.64 | $61.28 |
| Mid-grade | $4.23 | $33.30 | $66.60 |
| Premium | $4.55 | $35.80 | $71.60 |
| Diesel | $5.41 | $42.59 | $85.18 |
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.