How far is Kalispell, MT from Boulder, MT?
The driving distance from Kalispell, MT to Boulder, MT is about 223.9 miles (360.4 km), with a travel time of about 04h 18m by car.
- The straight-line flight distance is about 170 miles (273.6 km).
- For a round trip, plan for roughly 08h 36m 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 04h 18m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
This departure sits inside the recommended comfort window for the route.
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 Rain And Snow
Light Snow
Driving Route Map
The map below follows the saved road route between Kalispell and Boulder.
Turn-by-Turn Driving Directions
Step-by-step road directions between Kalispell and Boulder.
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1
Start on 3rd Street West
130 m · 16 sec · 3rd Street West
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2
Turn right onto 1st Avenue East
1.3 km · 2 min · 1st Avenue East
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3
Turn left onto US 93 South
2.7 mi · 4 min · US 93 South
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4
Turn left onto Snowline Lane
1.6 km · 4 min · Snowline Lane
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5
Turn right onto Demersville Road
1311 ft · 59 sec · Demersville Road
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6
At the end of the road, turn right onto Rocky Cliff Drive
89 m · 20 sec · Rocky Cliff Drive
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7
Turn left onto US 93 South
3.6 mi · 4 min · US 93 South
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8
Turn left
6.9 mi · 9 min
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9
Turn right
1821 ft · 37 sec
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10
Turn left
91.1 mi · 1 hr 44 min
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11
Turn left
23.8 mi · 26 min
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12
Turn right onto State Highway 141
32.5 mi · 35 min · State Highway 141
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13
Turn left
29.8 mi · 35 min
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14
Continue on West Lyndale Avenue
2326 ft · 1 min · West Lyndale Avenue
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15
Turn left onto North Last Chance Gulch Street
1.1 km · 2 min · North Last Chance Gulch Street
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16
Keep slight right to continue on North Last Chance Gulch Street
677 ft · 18 sec · North Last Chance Gulch Street
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17
Continue on Cedar Street
2883 ft · 1 min · Cedar Street
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18
Take the ramp slight right toward Butte
1290 ft · 31 sec
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19
Merge slight left onto First Special Service Force Memorial Highway
27.9 mi · 26 min · First Special Service Force Memorial Highway
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20
Take the exit slight right toward MT 69: Boulder
1242 ft · 37 sec
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21
Turn left
1.3 km · 1 min
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22
Turn right onto West Centennial Avenue
112 m · 16 sec · West Centennial Avenue
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23
Arrive at your destination
0 m · 1 sec · West Centennial Avenue
Car Route Details
A richer read on the saved driving route between Kalispell and Boulder.
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 left
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 Rain And Snow leaving Kalispell and Light Snow near Boulder.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Kalispell to Boulder?
The road trip is about 223.9 miles (360.4 km) and usually takes 04h 18m 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 111.8 miles from Kalispell and 112.1 miles from Boulder.
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 53.9 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 8:24 AM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $30.75 one way or $61.51 round trip. Estimated CO2 is about 70.2 kg one way.
What should you check before leaving?
Before you leave, expect Chance Rain And Snow around Kalispell and Light Snow near Boulder.
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 Kalispell and Boulder. Straight-line distance: 170.01 mi (273.6 km).
#1 Kalispell
City in Flathead County, Montana, United States
| Population | 25,329 |
| Coordinates | 48.1957900, -114.3129100 |
| Altitude | 901 |
| Country | United States |
#2 Boulder
Town in Montana
| Population | 1,291 |
| Coordinates | 46.2365900, -112.1208300 |
| Altitude | 1496 |
| Country | United States |
End: Boulder (-112.12083, 46.23659)
Estimated Travel Time
Distance: 360 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 07h 27m |
| 40 mph (64.37 km/h) | 05h 35m |
| 50 mph (80.47 km/h) | 04h 28m |
| 60 mph (96.56 km/h) | 03h 43m |
| 70 mph (112.65 km/h) | 03h 11m |
| 80 mph (129 km/h) | 02h 47m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $30.75 | $61.51 |
| Mid-grade | $4.23 | $33.42 | $66.85 |
| Premium | $4.55 | $35.94 | $71.87 |
| Diesel | $5.41 | $42.75 | $85.51 |
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.