How far is Missoula, MT from Roundup, MT?
The driving distance from Missoula, MT to Roundup, MT is about 316.3 miles (509.1 km), with a travel time of about 06h 20m by car.
- The straight-line flight distance is about 260.2 miles (418.7 km).
- For a round trip, plan for roughly 12h 40m 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 20m.
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.
City in Montana, USA
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny
Driving Route Map
The map below follows the saved road route between Missoula and Roundup.
Turn-by-Turn Driving Directions
Step-by-step road directions between Missoula and Roundup.
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1
Start on North Higgins Avenue
6 m · 8 sec · North Higgins Avenue
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2
Turn left onto East Broadway Street
3078 ft · 59 sec · East Broadway Street
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3
Turn left onto Van Buren Street
133 m · 6 sec · Van Buren Street
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4
Take the exit right
1216 ft · 30 sec
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5
Merge slight left onto Jeannette Rankin Memorial Highway
67.9 mi · 1 hr 5 min · Jeannette Rankin Memorial Highway
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6
Take the exit slight right toward US 12 East: Garrison, Helena
43.8 mi · 51 min
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7
Continue on West Lyndale Avenue
1.6 km · 2 min · West Lyndale Avenue
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8
Turn right onto North Montana Avenue
3033 ft · 2 min · North Montana Avenue
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9
Turn left onto 11th Avenue
1 km · 1 min · 11th Avenue
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10
Turn straight onto Prospect Avenue
1.3 mi · 2 min · Prospect Avenue
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11
Continue straight
3.6 mi · 5 min
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12
Continue straight
1678 ft · 26 sec
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13
Continue straight
27.3 mi · 31 min
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14
Turn left onto Broadway Street
42.1 mi · 47 min · Broadway Street
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15
Turn right onto West Main Street
58 mi · 1 hr 25 min · West Main Street
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16
Continue on 3rd Street Northeast
1.2 km · 1 min · 3rd Street Northeast
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17
Continue straight
66.5 mi · 1 hr 23 min
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18
At the end of the road, turn left
1.6 mi · 2 min
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19
Turn left onto Main Street
1245 ft · 21 sec · Main Street
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20
Arrive at your destination
0 m · 1 sec · Main Street
Car Route Details
A richer read on the saved driving route between Missoula and Roundup.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
Jeannette Rankin Memorial Highway
Merge slight left onto Jeannette Rankin Memorial Highway
67.9 mi · 01h 05m
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 Missoula and Sunny near Roundup.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Missoula to Roundup?
The road trip is about 316.3 miles (509.1 km) and usually takes 06h 20m 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?
Townsend is a useful midpoint, sitting about 157.8 miles from Missoula and 158.5 miles from Roundup.
How much longer is the road route than the straight-line distance?
The direct path is about 260.2 miles (418.7 km), while the road route adds roughly 56.1 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 $43.45 one way or $86.89 round trip. Estimated CO2 is about 99.2 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Missoula and Sunny near Roundup.
Stop Ideas Near Townsend
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 Townsend.
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Flight Path Map
This map shows the direct air route between Missoula and Roundup. Straight-line distance: 260.17 mi (418.71 km).
#1 Missoula
The most populous city in Missoula County, Montana.
| Population | 76,848 |
| Coordinates | 46.8721500, -113.9940000 |
| Altitude | 978 |
| 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: 509 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 10h 32m |
| 40 mph (64.37 km/h) | 07h 54m |
| 50 mph (80.47 km/h) | 06h 19m |
| 60 mph (96.56 km/h) | 05h 16m |
| 70 mph (112.65 km/h) | 04h 31m |
| 80 mph (129 km/h) | 03h 56m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $43.45 | $86.89 |
| Mid-grade | $4.23 | $47.22 | $94.44 |
| Premium | $4.55 | $50.77 | $101.53 |
| Diesel | $5.41 | $60.40 | $120.80 |
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.