How far is Billings, MT from Fort Belknap Agency, MT?
The driving distance from Billings, MT to Fort Belknap Agency, MT is about 202.3 miles (325.5 km), with a travel time of about 04h 42m by car.
- The straight-line flight distance is about 186.9 miles (300.8 km).
- For a round trip, plan for roughly 09h 25m 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 42m.
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 of the United States
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 Billings and Fort Belknap Agency.
Turn-by-Turn Driving Directions
Step-by-step road directions between Billings and Fort Belknap Agency.
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1
Start on Montana Avenue
2446 ft · 1 min · Montana Avenue
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2
Turn left onto North 18th Street
128 m · 9 sec · North 18th Street
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3
At the end of the road, turn right onto 1st Avenue North
1.1 km · 1 min · 1st Avenue North
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4
Continue on 1st Avenue North
123 m · 9 sec · 1st Avenue North
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5
Continue on Main Street
3.5 mi · 6 min · Main Street
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6
Turn slight left onto Roundup Road
44.4 mi · 49 min · Roundup Road
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7
Turn left onto Main Street
1.2 km · 1 min · Main Street
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8
Turn slight left
44.4 mi · 1 hr 3 min
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9
Continue straight
21.5 mi · 32 min
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10
Continue straight
35.8 mi · 53 min
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11
Turn left
50 mi · 1 hr 14 min
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12
Turn left
1584 ft · 24 sec
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13
Turn left
582 ft · 26 sec
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14
Continue on 1st
1684 ft · 1 min · 1st
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15
Arrive at your destination
0 m · 1 sec · 1st Street
Car Route Details
A richer read on the saved driving route between Billings and Fort Belknap Agency.
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
50 mi · 01h 14m
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.
Sunny leaving Billings and Sunny near Fort Belknap Agency.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Billings to Fort Belknap Agency?
The road trip is about 202.3 miles (325.5 km) and usually takes 04h 42m 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?
Grass Range is a useful midpoint, sitting about 101.1 miles from Billings and 101.2 miles from Fort Belknap Agency.
How much longer is the road route than the straight-line distance?
The direct path is about 186.9 miles (300.8 km), while the road route adds roughly 15.4 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 7:34 AM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $27.80 one way or $55.59 round trip. Estimated CO2 is about 63.5 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Billings and Sunny near Fort Belknap Agency.
Flight Path Map
This map shows the direct air route between Billings and Fort Belknap Agency. Straight-line distance: 186.91 mi (300.81 km).
#1 Billings
The most populous city in Montana.
| Population | 117,445 |
| Coordinates | 45.7832900, -108.5006900 |
| Altitude | 952 |
| Country | United States |
#2 Fort Belknap Agency
Census designated place
| Population | 1,293 |
| Coordinates | 48.4825000, -108.7654400 |
| Altitude | 724 |
| Country | United States |
End: Fort Belknap Agency (-108.76544, 48.4825)
Estimated Travel Time
Distance: 326 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 06h 44m |
| 40 mph (64.37 km/h) | 05h 03m |
| 50 mph (80.47 km/h) | 04h 02m |
| 60 mph (96.56 km/h) | 03h 22m |
| 70 mph (112.65 km/h) | 02h 53m |
| 80 mph (129 km/h) | 02h 31m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $27.80 | $55.59 |
| Mid-grade | $4.23 | $30.21 | $60.42 |
| Premium | $4.55 | $32.48 | $64.96 |
| Diesel | $5.41 | $38.64 | $77.28 |
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 19, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.