How far is Afton, WY from Casper, WY?
The driving distance from Afton, WY to Casper, WY is about 350.8 miles (564.5 km), with a travel time of about 06h 35m by car.
- The straight-line flight distance is about 234.3 miles (377.1 km).
- For a round trip, plan for roughly 13h 11m 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 35m.
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.
Town of the United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Rain And Snow
Mostly Sunny then Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Afton and Casper.
Turn-by-Turn Driving Directions
Step-by-step road directions between Afton and Casper.
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1
Start on the route
33 m · 13 sec
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2
Turn left onto East 4th Avenue
135 m · 22 sec · East 4th Avenue
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3
Turn right onto Washington Street
15.6 mi · 21 min · Washington Street
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4
Continue on US Highway 89
17.5 mi · 22 min · US Highway 89
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5
Turn right
22.8 mi · 32 min
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6
Enter the roundabout and take exit 2 toward South Highway 89
37 m · 3 sec · South Highway 89
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7
Exit the roundabout onto South Highway 89
11.8 mi · 17 min · South Highway 89
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8
Continue on West Broadway Avenue
1 mi · 3 min · West Broadway Avenue
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9
Turn right onto West Pearl Avenue
2015 ft · 50 sec · West Pearl Avenue
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10
Turn left onto South Cache Drive
120 m · 10 sec · South Cache Drive
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11
Continue on North Cache Street
1.4 km · 3 min · North Cache Street
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12
Continue on North Highway 89
6 mi · 9 min · North Highway 89
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13
Enter the roundabout and take exit 2 toward North Highway 89
34 m · 6 sec · North Highway 89
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14
Exit the roundabout onto North Highway 89
23.3 mi · 32 min · North Highway 89
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15
Continue on East Highway 287
53.2 mi · 1 hr · East Highway 287
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16
Continue on West Ramshorn Street
2.2 mi · 3 min · West Ramshorn Street
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17
Turn right onto South 1st Street
77.9 mi · 1 hr 28 min · South 1st Street
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18
At the end of the road, turn left onto North Federal Boulevard
39 mi · 44 min · North Federal Boulevard
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19
Continue straight
76.9 mi · 1 hr 27 min
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20
Turn left
2.7 mi · 3 min
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21
Take the exit right
2.5 mi · 4 min
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22
Take the exit slight right toward US 20 East, US 26 East, US 87 South: North Beverly Street, Bryan Stock Trail
1755 ft · 41 sec
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23
At the end of the road, turn left onto Bryan Stock Trail
1.1 mi · 2 min · Bryan Stock Trail
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24
Turn left onto East Sunlight Drive
1.5 km · 4 min · East Sunlight Drive
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25
Arrive at your destination
0 m · 1 sec · North Sunlight Drive
Car Route Details
A richer read on the saved driving route between Afton and Casper.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
South 1st Street
Turn right onto South 1st Street
77.9 mi · 01h 28m
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.
Rain And Snow leaving Afton and Mostly Sunny then Chance Showers And Thunderstorms near Casper.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Afton to Casper?
The road trip is about 350.8 miles (564.5 km) and usually takes 06h 35m 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?
Dubois is a useful midpoint, sitting about 177.9 miles from Afton and 172.9 miles from Casper.
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 116.5 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 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 $48.20 one way or $96.39 round trip. Estimated CO2 is about 110 kg one way.
What should you check before leaving?
Before you leave, expect Rain And Snow around Afton and Mostly Sunny then Chance Showers And Thunderstorms near Casper.
Flight Path Map
This map shows the direct air route between Afton and Casper. Straight-line distance: 234.34 mi (377.14 km).
#1 Afton
Town in Wyoming, United States
| Population | 2,071 |
| Coordinates | 42.7249300, -110.9318700 |
| Altitude | 1902 |
| Country | United States |
#2 Casper
The most populous city in Natrona County, Wyoming.
| Population | 58,498 |
| Coordinates | 42.8666300, -106.3130800 |
| Altitude | 1560 |
| Country | United States |
End: North Sunlight Drive (-106.309604, 42.868632)
Estimated Travel Time
Distance: 565 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 11h 41m |
| 40 mph (64.37 km/h) | 08h 46m |
| 50 mph (80.47 km/h) | 07h 00m |
| 60 mph (96.56 km/h) | 05h 50m |
| 70 mph (112.65 km/h) | 05h 00m |
| 80 mph (129 km/h) | 04h 22m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $48.20 | $96.39 |
| Mid-grade | $4.23 | $52.38 | $104.76 |
| Premium | $4.55 | $56.32 | $112.63 |
| Diesel | $5.41 | $67.00 | $134.00 |
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 Wyoming · Apr 16, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.