How far is Great Falls, MT from Forsyth, MT?
The driving distance from Great Falls, MT to Forsyth, MT is about 318.8 miles (513.1 km), with a travel time of about 05h 56m by car.
- The straight-line flight distance is about 234.3 miles (377.1 km).
- For a round trip, plan for roughly 11h 52m 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 05h 56m.
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 Montana
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Sunny then Showers And Thunderstorms Likely
Partly Sunny then Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Great Falls and Forsyth.
Turn-by-Turn Driving Directions
Step-by-step road directions between Great Falls and Forsyth.
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1
Start on 4th Street South
49 m · 12 sec · 4th Street South
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2
Turn left onto 5th Avenue South
130 m · 21 sec · 5th Avenue South
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3
Turn right onto 5th Street South
1988 ft · 36 sec · 5th Street South
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4
Turn left onto 10th Avenue South
5.7 mi · 8 min · 10th Avenue South
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5
Continue straight
17.6 mi · 19 min
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6
Enter the roundabout and take exit 2 toward the route
68 m · 3 sec
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7
Exit the roundabout
1606 ft · 21 sec
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8
Turn straight
64.3 mi · 1 hr 10 min
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9
Turn right
39.2 mi · 43 min
-
10
Turn left
45.1 mi · 51 min
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11
Turn right
12.4 mi · 14 min
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12
Continue straight
2.5 mi · 3 min
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13
Continue straight
25.5 mi · 29 min
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14
Enter the roundabout and take exit 2 toward the route
38 m · 2 sec
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15
Exit the roundabout
3.1 mi · 4 min
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16
Enter the roundabout and take exit 2 toward Airport Road
46 m · 2 sec · Airport Road
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17
Exit the rotary onto Airport Road
2.7 mi · 4 min · Airport Road
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18
Turn right onto Swords Lane
76 m · 12 sec · Swords Lane
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19
Turn left onto Aronson Avenue
143 m · 9 sec · Aronson Avenue
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20
Merge slight left
3275 ft · 1 min
-
21
Turn left onto US Highway 87 East
1.3 mi · 2 min · US Highway 87 East
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22
Turn left
1595 ft · 41 sec
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23
Continue straight
3.1 mi · 4 min
-
24
Keep slight left to continue on I 94 East: Bismark
92.7 mi · 1 hr 39 min
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25
Take the exit slight right
1341 ft · 38 sec
-
26
Turn left
1801 ft · 36 sec
-
27
Turn sharp right onto West Main Street
1.5 km · 2 min · West Main Street
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28
Turn left onto North 10th Avenue
46 m · 9 sec · North 10th Avenue
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29
Turn right
25 m · 6 sec
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30
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Great Falls and Forsyth.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
I 94 East
Keep slight left to continue on I 94 East: Bismark
92.7 mi · 01h 39m
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.
Partly Sunny then Showers And Thunderstorms Likely leaving Great Falls and Partly Sunny then Chance Rain Showers near Forsyth.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Great Falls to Forsyth?
The road trip is about 318.8 miles (513.1 km) and usually takes 05h 56m 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?
Ryegate is a useful midpoint, sitting about 159.1 miles from Great Falls and 159.7 miles from Forsyth.
How much longer is the road route than the straight-line distance?
The direct path is about 234.3 miles (377.1 km), while the road route adds roughly 84.5 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 5:08 AM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $43.80 one way or $87.59 round trip. Estimated CO2 is about 100 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny then Showers And Thunderstorms Likely around Great Falls and Partly Sunny then Chance Rain Showers near Forsyth.
Stop Ideas Near Ryegate
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 Ryegate.
Billings, MT
Flight Path Map
This map shows the direct air route between Great Falls and Forsyth. Straight-line distance: 234.33 mi (377.11 km).
#1 Great Falls
Town in Cascade County, Montana, United States
| Population | 58,353 |
| Coordinates | 47.5002400, -111.3008100 |
| Altitude | 1015 |
| Country | United States |
#2 Forsyth
Rosebud county seat and river town near Yellowstone River
| Population | 1,752 |
| Coordinates | 46.2663800, -106.6778100 |
| Altitude | 768 |
| Country | United States |
End: Forsyth (-106.67781, 46.26638)
Estimated Travel Time
Distance: 513 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 10h 37m |
| 40 mph (64.37 km/h) | 07h 58m |
| 50 mph (80.47 km/h) | 06h 22m |
| 60 mph (96.56 km/h) | 05h 18m |
| 70 mph (112.65 km/h) | 04h 33m |
| 80 mph (129 km/h) | 03h 58m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $43.80 | $87.59 |
| Mid-grade | $4.23 | $47.60 | $95.20 |
| Premium | $4.55 | $51.18 | $102.35 |
| Diesel | $5.41 | $60.89 | $121.77 |
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.