The drive from Casper, WY to Guernsey, WY covers 111.9 miles and takes about 1h 59m behind the wheel.
This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on I 25, US 26, Bryan Stock Trail for much of the mileage,
and the overall profile is highway-focused drive.
The longest uninterrupted segment is about 93.5 miles on I 25.
At current regular gas prices, budget about $17.73 one way before food or hotel costs.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Midpoint
55.9 miles from Casper, WY
A natural place for your longest stop of the day
, about 1h into the drive
.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 1h 59m. Total distance: 111.9 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
This is a 1h 59m highway drive covering 111.9 miles, with most of the trip on I 25 and US 26. The longest continuous stretch is about 93.5 miles on I 25.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 11 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
I 25 is the longest continuous segment at about 93.5 miles.
How Hard Is This Drive?
This is a straightforward highway drive that stays mostly on I 25 and US 26. Navigation is very simple - set it and forget it for most of the drive. The trickiest moment comes around 0.3 miles in.
Driving Effort1/10
Very easy - short and simple to drive
Balances navigation complexity with total wheel time.
The drive from Casper, WY to Guernsey, WY is easy. At 1h 59m with 97% highway, most drivers will find it relaxed and low-stress.
Where does it get tricky?
The main spots that need attention: at 0.3 miles: Navigation decision point; at 0.9 miles (Bryan Stock Trail): Navigation decision point; at 2.2 miles (I 25 BUS; US 20; US 26; US 87 / East Yellowstone Highway): Navigation decision point.
Critical Maneuvers
5 of 7 key points
These are the spots where you need to pay the most attention. Preview them before you drive.
5
0.3 mi into trip|~1m in
Turn right
Navigation decision point
5
0.9 mi into trip|~3m in|Bryan Stock Trail
At end of road, turn right onto Bryan Stock Trail
Navigation decision point
5
2.2 mi into trip|~6m in|I 25 BUS; US 20; US 26; US 87 / East Yellowstone Highway
Turn left onto I 25 BUS; US 20; US 26; US 87 / East Yellowstone Highway
Navigation decision point
4
2.5 mi into trip|~6m in
Take the ramp toward I 25 South: Douglas
Navigation decision point
Toward I 25 South: Douglas
5
96.3 mi into trip|~1h 40m in|US 26
Take the exit onto US 26 toward Guernsey, Torrington
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Toward Guernsey, Torrington
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
On the drive from Casper, WY to Guernsey, WY, road signs begin pointing toward Torrington along the way.
Torrington
96.3 mi in|~1h 40m|via US 26
Main Roads
Road
Distance
Duration
I 25
93.5 mi
1h 33m
US 26
15.6 mi
19m
Bryan Stock Trail
1.1 mi
1m
East Sunlight Drive
0.5 mi
1m
East Yellowstone Highway
0.3 mi
<1m
North Sunlight Drive
0.3 mi
1m
North Beverly Street
0.2 mi
<1m
South Wyoming Avenue
<0.1 mi
<1m
Longest stretch:
I 25
— 93.5 mi, about 1h 33m
Turn-by-Turn Driving Directions
Step-by-step road directions between Casper, WY and Guernsey, WY.
1
Start on North Sunlight Drive
0.3 mi·1 min·North Sunlight Drive
2
Turn right
0.1 mi·33 sec
3
Turn right onto East Sunlight Drive
0.5 mi·1 min·East Sunlight Drive
4
At end of road, turn right onto Bryan Stock Trail
1.1 mi·1 min·Bryan Stock Trail
5
Continue on I 25 Business
0.2 mi·29 sec·North Beverly Street
6
Turn left onto I 25 BUS; US 20; US 26; US 87
0.3 mi·25 sec·East Yellowstone Highway
7
Take the ramp
0.3 mi·37 sec
Toward I 25 South: Douglas
8
Merge onto I 25
93 mi·1 hr 33 min·I 25
9
Take the exit onto US 26
16 mi·19 min·US 26
Toward Guernsey, Torrington
10
Turn right onto South Wyoming Avenue
54 ft·1 sec·South Wyoming Avenue
11
Arrive at destination
South Wyoming Avenue
Trip Plan
Morning Departure
Leave by 9 AM and you'll arrive before lunch.
Evening Departure
Even a 4 PM departure gets you there before dark in summer.
You can normally do this drive in one day.
You may only need one short stretch break if traffic stays light.
The halfway point lands around 55.9 miles from Casper, WY, or about 1h into the drive.
The longest continuous stretch on this route runs about 93.5 miles.
This is a comfortable same-day trip.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 25 miles or 29m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 55.9 miles or 1h in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 1h 36m
Traffic, exits, and arrival timing usually matter more near Guernsey, WY than in the middle of the route.
Before You Leave
+
Open the route before leaving Casper, WY so your first major turns are already loaded.
Day 1
Settle into the route from Casper, WY
This is one driving day of about 111.9 miles and 1h 59m.
Your first comfortable stop window is around 25 miles from Casper, WY.
This route can stay practical as a one-day drive if traffic stays reasonable.
The longest stretch is on I 25 for about 93.5 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Place data sourced from public business listings. Hours and availability may vary.
Fuel & Cost
Regular Gas
$17.73 one way
$35.46 round trip
$4.03/gal25.4 MPG avg39 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.22
$18.59
$37.17
premium
$4.53
$19.96
$39.92
diesel
$5.61
$24.71
$49.41
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$18
Meals
$25–$50
Total
$43–$68
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 39.2 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $12 in charging
· 0 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
33.6
0
$11.75
$5.37
Efficient EV
28
0
$9.79
$4.48
EV Truck/SUV
44.8
0
$15.67
$7.16
Gas CO2
39 kg
EV CO2
13 kg (67% less)
This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.
DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.
Travel Intel
Current conditions at both ends of the drive.
Forecast as of Apr 15, 2026
Origin
Casper, WY
Afternoon
in Casper on Thursday
Local time
3:23 PM
MDT
Current temp
44°F
Unavailable
Live forecast
Destination
Guernsey, WY
Afternoon
in Guernsey on Thursday
Local time
3:23 PM
MDT
Current temp
76°F
Unavailable
Live forecast
75°F
Douglas, WY
56 mi in
Seasonal Notes
Summer travel usually means heavier construction, hotter rest stops, and busier weekend traffic around major cities.
Winter travel shortens daylight, so a route that looks manageable on paper can feel much longer after dark.
Holiday weekends tend to make both departure and arrival windows slower than the raw route time suggests.
Time zone
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
32 degrees warmer at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
1h 59m on the road
Use the two city cards together: check the sky where you start, then compare it with the local time and temperature at arrival.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
Frequently Asked Questions
The drive from Casper, WY to Guernsey, WY covers 111.9 miles and takes about 1h 59m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are I 25, US 26, Bryan Stock Trail. Most of the drive stays on highways, so watch for ramps and exits.
This is a comfortable same-day trip.
The midpoint is about 55.9 miles from Casper, WY. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $17.73 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
Leave by 9 AM and you'll arrive before lunch. Even a 4 PM departure gets you there before dark in summer.
The drive from Casper, WY to Guernsey, WY is easy. At 1h 59m with 97% highway, most drivers will find it relaxed and low-stress.
The main spots that need attention: at 0.3 miles: Navigation decision point; at 0.9 miles (Bryan Stock Trail): Navigation decision point; at 2.2 miles (I 25 BUS; US 20; US 26; US 87 / East Yellowstone Highway): Navigation decision point.
On the drive from Casper, WY to Guernsey, WY, road signs begin pointing toward Torrington along the way.
