How far is Sun Prairie, MT from Billings, MT?
The driving distance from Sun Prairie, MT to Billings, MT is about 230.5 miles (371 km), with a travel time of about 04h 08m by car.
- The straight-line flight distance is about 186.2 miles (299.6 km).
- For a round trip, plan for roughly 08h 17m 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 08m.
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.
City in Wheatland County, Montana, 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 Sun Prairie and Billings.
Turn-by-Turn Driving Directions
Step-by-step road directions between Sun Prairie and Billings.
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1
Start on Manchester Lane
1.5 km · 4 min · Manchester Lane
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2
Turn left onto South Manchester Road
2802 ft · 2 min · South Manchester Road
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3
At the end of the road, turn right onto Vaughn South Frontage Road
2437 ft · 56 sec · Vaughn South Frontage Road
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4
Turn left onto North Manchester Road
722 ft · 16 sec · North Manchester Road
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5
Take the ramp right
969 ft · 24 sec
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6
Merge slight left onto First Special Service Force Memorial Highway
5.4 mi · 5 min · First Special Service Force Memorial Highway
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7
Take the exit slight right toward I 15 Business
1262 ft · 31 sec
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8
Turn left onto Central Avenue West
1.5 mi · 2 min · Central Avenue West
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9
Continue on First Avenue North Bridge
1055 ft · 18 sec · First Avenue North Bridge
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10
Continue on 1st Avenue North
1.2 mi · 2 min · 1st Avenue North
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11
Turn right onto 14th Street North
1.3 km · 1 min · 14th Street North
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12
Turn left onto 10th Avenue South
22.6 mi · 25 min · 10th Avenue South
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13
Enter the roundabout and take exit 2 toward the route
68 m · 3 sec
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14
Exit the roundabout
1606 ft · 21 sec
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15
Turn straight
64.3 mi · 1 hr 10 min
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16
Turn right
39.2 mi · 43 min
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17
Turn left
45.1 mi · 51 min
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18
Turn right
12.4 mi · 14 min
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19
Continue straight
2.5 mi · 3 min
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20
Continue straight
25.5 mi · 29 min
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21
Enter the roundabout and take exit 2 toward the route
38 m · 2 sec
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22
Exit the roundabout
3.1 mi · 4 min
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23
Enter the roundabout and take exit 1 toward North 27th Street
11 m · 1 sec · North 27th Street
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24
Exit the roundabout onto North 27th Street
2.2 mi · 4 min · North 27th Street
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25
Turn left onto Montana Avenue
933 ft · 34 sec · Montana Avenue
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26
Arrive at your destination
0 m · 1 sec · Montana Avenue
Car Route Details
A richer read on the saved driving route between Sun Prairie and Billings.
Interchange-aware route
The drive includes several ramps, exits, or merges, so checking the next few maneuvers before busy interchanges is useful.
Longest stretch
Turn straight
64.3 mi · 01h 10m
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 Sun Prairie and Sunny near Billings.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Sun Prairie to Billings?
The road trip is about 230.5 miles (371 km) and usually takes 04h 08m 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?
Judith Gap is a useful midpoint, sitting about 114.4 miles from Sun Prairie and 116.1 miles from Billings.
How much longer is the road route than the straight-line distance?
The direct path is about 186.2 miles (299.6 km), while the road route adds roughly 44.3 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 8:42 AM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $36.54 one way or $73.07 round trip. Estimated CO2 is about 72.3 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Sun Prairie and Sunny near Billings.
Flight Path Map
This map shows the direct air route between Sun Prairie and Billings. Straight-line distance: 186.14 mi (299.57 km).
#1 Sun Prairie
Situated in Cascade County at an elevation of 3,340 feet, this central Montana community lies northwest of Great Falls along the Sun River.
| Population | 0 |
| Coordinates | 47.5369000, -111.4813600 |
| Altitude | 1018 |
| Country | United States |
#2 Billings
The most populous city in Montana.
| Population | 117,445 |
| Coordinates | 45.7832900, -108.5006900 |
| Altitude | 952 |
| Country | United States |
End: Montana Avenue (-108.500696, 45.783296)
Estimated Travel Time
Distance: 371 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 07h 40m |
| 40 mph (64.37 km/h) | 05h 45m |
| 50 mph (80.47 km/h) | 04h 36m |
| 60 mph (96.56 km/h) | 03h 50m |
| 70 mph (112.65 km/h) | 03h 17m |
| 80 mph (129 km/h) | 02h 52m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.49 | $36.54 | $73.07 |
| Mid-grade | $4.83 | $39.23 | $78.45 |
| Premium | $5.19 | $42.22 | $84.44 |
| Diesel | $6.11 | $49.67 | $99.35 |
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 · Oct 15, 2026