How far is Billings, MT from Sun Prairie, MT?
The driving distance from Billings, MT to Sun Prairie, MT is about 229.5 miles (369.4 km), with a travel time of about 04h 25m by car.
- The straight-line flight distance is about 186.2 miles (299.6 km).
- For a round trip, plan for roughly 08h 50m 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 25m.
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.
Driving Route Map
The map below follows the saved road route between Billings and Sun Prairie.
Turn-by-Turn Driving Directions
Step-by-step road directions between Billings and Sun Prairie.
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1
Start on Montana Avenue
589 ft · 25 sec · Montana Avenue
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2
Turn left onto North 23rd Street
114 m · 22 sec · North 23rd Street
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3
Turn left onto 1st Avenue North
1518 ft · 1 min · 1st Avenue North
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4
Turn right onto North 27th Street
2.1 mi · 3 min · North 27th Street
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5
Enter the roundabout and take exit 3 toward Airport Road
72 m · 3 sec
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6
Exit the roundabout
3.1 mi · 4 min
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7
Enter the roundabout and take exit 2 toward the route
44 m · 2 sec
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8
Exit the roundabout
25.5 mi · 29 min
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9
Continue on Iowa Avenue
2.5 mi · 3 min · Iowa Avenue
-
10
Continue straight
12.4 mi · 14 min
-
11
At the end of the road, turn left
45.1 mi · 51 min
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12
Turn right
39.2 mi · 43 min
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13
At the end of the road, turn left
64.3 mi · 1 hr 10 min
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14
Turn slight right
1588 ft · 21 sec
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15
Enter the roundabout and take exit 2 toward the route
52 m · 2 sec
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16
Exit the roundabout
557 ft · 7 sec
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17
Continue straight
19.3 mi · 21 min
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18
Turn right onto 57th Street South
1.5 km · 1 min · 57th Street South
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19
Turn left onto 2nd Avenue North
4.3 mi · 8 min · 2nd Avenue North
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20
At the end of the road, turn left onto Park Drive North
73 m · 4 sec · Park Drive North
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21
Turn right onto 1st Avenue North
1070 ft · 24 sec · 1st Avenue North
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22
Continue on First Avenue North Bridge
1045 ft · 18 sec · First Avenue North Bridge
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23
Continue on Central Avenue West
1.4 mi · 2 min · Central Avenue West
-
24
Take the exit right
1311 ft · 32 sec
-
25
Merge slight left onto First Special Service Force Memorial Highway
5.5 mi · 6 min · First Special Service Force Memorial Highway
-
26
Take the exit slight right
877 ft · 28 sec
-
27
Turn left onto North Manchester Road
1144 ft · 27 sec · North Manchester Road
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28
At the end of the road, turn right onto Vaughn South Frontage Road
2437 ft · 55 sec · Vaughn South Frontage Road
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29
Turn left onto South Manchester Road
2802 ft · 2 min · South Manchester Road
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30
Turn right onto Manchester Lane
1.5 km · 4 min · Manchester Lane
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31
Arrive at your destination
0 m · 1 sec · Manchester Lane
Car Route Details
A richer read on the saved driving route between Billings and Sun Prairie.
Interchange-aware route
The drive includes several ramps, exits, or merges, so checking the next few maneuvers before busy interchanges is useful.
Longest stretch
At the end of the road, turn left
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 Billings and Sunny near Sun Prairie.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Billings to Sun Prairie?
The road trip is about 229.5 miles (369.4 km) and usually takes 04h 25m 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 114.6 miles from Billings and 115 miles from Sun Prairie.
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 43.3 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 8:10 AM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $36.40 one way or $72.80 round trip. Estimated CO2 is about 72 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Billings and Sunny near Sun Prairie.
Flight Path Map
This map shows the direct air route between Billings and Sun Prairie. Straight-line distance: 186.14 mi (299.57 km).
#1 Billings
The most populous city in Montana.
| Population | 117,445 |
| Coordinates | 45.7832900, -108.5006900 |
| Altitude | 952 |
| Country | United States |
#2 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 |
End: Sun Prairie (-111.48136, 47.5369)
Estimated Travel Time
Distance: 369 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 07h 38m |
| 40 mph (64.37 km/h) | 05h 44m |
| 50 mph (80.47 km/h) | 04h 35m |
| 60 mph (96.56 km/h) | 03h 49m |
| 70 mph (112.65 km/h) | 03h 16m |
| 80 mph (129 km/h) | 02h 51m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.49 | $36.40 | $72.80 |
| Mid-grade | $4.83 | $39.08 | $78.17 |
| Premium | $5.19 | $42.06 | $84.13 |
| Diesel | $6.11 | $49.49 | $98.98 |
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