How far is Guernsey, WY from Casper, WY?
The driving distance from Guernsey, WY to Casper, WY is about 111.4 miles (179.3 km), with a travel time of about 01h 43m by car.
- The straight-line flight distance is about 90 miles (144.8 km).
- For a round trip, plan for roughly 03h 27m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM MDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
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 01h 43m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
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 Converse County, Wyoming, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Cloudy then Chance Rain Showers
Mostly Sunny then Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Guernsey and Casper.
Turn-by-Turn Driving Directions
Step-by-step road directions between Guernsey and Casper.
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1
Start on South Wyoming Avenue
17 m · 7 sec · South Wyoming Avenue
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2
Turn left onto West Whalen Street
2588 ft · 1 min · West Whalen Street
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3
Continue on Highway 26
14.5 mi · 17 min · Highway 26
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4
Keep slight right
94.2 mi · 1 hr 35 min
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5
Take the exit slight right toward I 25 Business, US 20, US 26, US 87: North Beverly Street, Bryan Stock Trail
670 ft · 16 sec
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6
Turn straight onto East F Street
99 m · 10 sec · East F Street
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7
Turn right onto Bryan Stock Trail
1.1 mi · 2 min · Bryan Stock Trail
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8
Turn left onto East Sunlight Drive
1.5 km · 4 min · East Sunlight Drive
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9
Arrive at your destination
0 m · 1 sec · North Sunlight Drive
Car Route Details
A richer read on the saved driving route between Guernsey and Casper.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Highway 26
Keep slight right
94.2 mi · 01h 35m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Mostly Cloudy then Chance Rain Showers leaving Guernsey 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 Guernsey to Casper?
The road trip is about 111.4 miles (179.3 km) and usually takes 01h 43m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Douglas is a useful midpoint, sitting about 55.7 miles from Guernsey and 55.8 miles from Casper.
How much longer is the road route than the straight-line distance?
The direct path is about 90 miles (144.8 km), while the road route adds roughly 21.4 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 8:00 AM to 10:00 AM MDT. If you want a more comfortable same-day return, try to leave by 3:02 PM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $15.30 one way or $30.60 round trip. Estimated CO2 is about 34.9 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Cloudy then Chance Rain Showers around Guernsey and Mostly Sunny then Chance Showers And Thunderstorms near Casper.
Stop Ideas Near Douglas
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Douglas City Hall Historic
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Douglas.
Douglas, Wyoming
Casper, Wyoming
Wheatland, Wyoming
Flight Path Map
This map shows the direct air route between Guernsey and Casper. Straight-line distance: 89.97 mi (144.8 km).
#1 Guernsey
Town in Platte County, Wyoming, United States of America
| Population | 1,143 |
| Coordinates | 42.2696900, -104.7416300 |
| Altitude | 1327 |
| 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: 179 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 03h 42m |
| 40 mph (64.37 km/h) | 02h 47m |
| 50 mph (80.47 km/h) | 02h 13m |
| 60 mph (96.56 km/h) | 01h 51m |
| 70 mph (112.65 km/h) | 01h 35m |
| 80 mph (129 km/h) | 01h 23m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $15.30 | $30.60 |
| Mid-grade | $4.23 | $16.63 | $33.26 |
| Premium | $4.55 | $17.88 | $35.76 |
| Diesel | $5.41 | $21.27 | $42.54 |
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.