How far is Kalispell, MT from Roundup, MT?
The driving distance from Kalispell, MT to Roundup, MT is about 405.8 miles (653 km), with a travel time of about 07h 56m by car.
- The straight-line flight distance is about 296 miles (476.4 km).
- For a round trip, plan for roughly 15h 52m 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 07h 56m.
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 Montana, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Sunny
Driving Route Map
The map below follows the saved road route between Kalispell and Roundup.
Turn-by-Turn Driving Directions
Step-by-step road directions between Kalispell and Roundup.
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1
Start on 3rd Street West
1169 ft · 39 sec · 3rd Street West
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2
Turn left onto 3rd Avenue East
112 m · 12 sec · 3rd Avenue East
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3
Turn right onto 2nd Street East
1235 ft · 34 sec · 2nd Street East
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4
Continue on Conrad Drive
1451 ft · 45 sec · Conrad Drive
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5
Turn left onto Woodland Park Drive
2161 ft · 1 min · Woodland Park Drive
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6
Turn right onto US Route 2
1.2 mi · 2 min · US Route 2
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7
Turn straight onto State Highway 35
2.4 mi · 4 min · State Highway 35
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8
Continue straight
3.3 mi · 4 min
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9
Turn left
9.7 mi · 12 min
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10
At the end of the road, turn right onto US 2
1.7 mi · 2 min · US 2
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11
Continue on US Route 2
80.1 mi · 1 hr 31 min · US Route 2
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12
Enter the roundabout and take exit 1 toward the route
7 m · 1 sec
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13
Exit the roundabout
3.7 mi · 7 min
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14
Turn straight
68.3 mi · 1 hr 17 min
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15
Enter the roundabout and take exit 3 toward 1st Street Southwest
526 ft · 19 sec · 1st Street Southwest
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16
Exit the rotary onto 1st Street Southwest
33 m · 2 sec · 1st Street Southwest
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17
Turn straight onto Main Avenue South
1.1 km · 2 min · Main Avenue South
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18
Continue on United States Route 89
16.8 mi · 19 min · United States Route 89
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19
Continue on 1st Road Southeast
14.7 mi · 16 min · 1st Road Southeast
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20
At the end of the road, turn left
7.9 mi · 9 min
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21
Take the exit slight right toward I 15 South: Great Falls
1323 ft · 32 sec
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22
Merge slight left onto First Special Service Force Memorial Highway
9.5 mi · 9 min · First Special Service Force Memorial Highway
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23
Take the exit slight right toward I 15 Business
1262 ft · 31 sec
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24
Turn left onto Central Avenue West
1.5 mi · 2 min · Central Avenue West
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25
Continue on First Avenue North Bridge
1055 ft · 18 sec · First Avenue North Bridge
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26
Continue on 1st Avenue North
1.2 mi · 2 min · 1st Avenue North
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27
Turn right onto 14th Street North
1.3 km · 1 min · 14th Street North
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28
Turn left onto 10th Avenue South
22.6 mi · 25 min · 10th Avenue South
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29
Enter the roundabout and take exit 2 toward the route
68 m · 3 sec
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30
Exit the roundabout
1606 ft · 21 sec
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31
Turn straight
64.3 mi · 1 hr 10 min
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32
Continue straight
14.7 mi · 16 min
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33
Turn straight onto Truck Bypass
2.6 mi · 4 min · Truck Bypass
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34
Continue on 1st Avenue North
1629 ft · 37 sec · 1st Avenue North
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35
Turn left onto East Main Street
1946 ft · 1 min · East Main Street
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36
Continue on Northeast Main Street
1.1 mi · 2 min · Northeast Main Street
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37
Continue on US Highway 87
29.1 mi · 31 min · US Highway 87
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38
Turn right
44.9 mi · 1 hr 4 min
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39
Arrive at your destination
0 m · 1 sec · Main Street
Car Route Details
A richer read on the saved driving route between Kalispell and Roundup.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
US Route 2
Continue on US Route 2
80.1 mi · 01h 31m
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 Kalispell and Sunny near Roundup.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Kalispell to Roundup?
The road trip is about 405.8 miles (653 km) and usually takes 07h 56m 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?
Fairfield is a useful midpoint, sitting about 202.6 miles from Kalispell and 203.2 miles from Roundup.
How much longer is the road route than the straight-line distance?
The direct path is about 296 miles (476.4 km), while the road route adds roughly 109.8 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 $55.75 one way or $111.50 round trip. Estimated CO2 is about 127.3 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Kalispell and Sunny near Roundup.
Stop Ideas Near Fairfield
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 Fairfield.
Shelby
Cut Bank
Flight Path Map
This map shows the direct air route between Kalispell and Roundup. Straight-line distance: 296.03 mi (476.42 km).
#1 Kalispell
City in Flathead County, Montana, United States
| Population | 25,329 |
| Coordinates | 48.1957900, -114.3129100 |
| Altitude | 901 |
| Country | United States |
#2 Roundup
City in Musselshell County, Montana, United States
| Population | 1,864 |
| Coordinates | 46.4452400, -108.5418000 |
| Altitude | 980 |
| Country | United States |
End: Roundup (-108.5418, 46.44524)
Estimated Travel Time
Distance: 653 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 13h 31m |
| 40 mph (64.37 km/h) | 10h 08m |
| 50 mph (80.47 km/h) | 08h 06m |
| 60 mph (96.56 km/h) | 06h 45m |
| 70 mph (112.65 km/h) | 05h 47m |
| 80 mph (129 km/h) | 05h 03m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $55.75 | $111.50 |
| Mid-grade | $4.23 | $60.59 | $121.18 |
| Premium | $4.55 | $65.14 | $130.28 |
| Diesel | $5.41 | $77.50 | $155.00 |
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 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.