Lander to Casper is 148.6 miles and takes about 2h 54m via US 20, WY 789, and Bryan Stock Trail, with a fuel budget near $24 and enough daylight to finish in a day. This trip stays within Wyoming, connecting two points in the Mountain West region. It's primarily a highway-focused drive, making it a straightforward and efficient journey. With a drive time under three hours and a modest fuel cost, this route is ideal for a quick, one-day transit between these two Wyoming locales. You'll find it a practical option if you're looking for a direct connection without significant detours.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Break Rhythm
1 planned break
A short stop every 2 to 3 hours is enough for this drive.
Midpoint
74.3 miles from Lander, WY
A natural place for your longest stop of the day
, about 1h 25m into the drive
.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 2h 54m. Total distance: 148.6 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
This route is overwhelmingly a highway-focused drive, with 97% of the journey on main roads. Expect consistent travel on US 20 and WY 789 for the majority of your trip. The longest uninterrupted stretch you'll encounter is approximately 80 miles on US 20, allowing for a steady pace. The character of the road is predominantly efficient highway travel, designed for covering distance. While there's a short segment on Bryan Stock Trail, the overall feel remains one of consistent movement across the landscape.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 9 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
US 20 is the longest continuous segment at about 80 miles.
How Hard Is This Drive?
This is a straightforward highway drive that stays mostly on US 20 and WY 789. Navigation is very simple - set it and forget it for most of the drive. The trickiest moment comes around 0.4 miles in near WY 789.
Driving Effort1/10
Very easy - short and simple to drive
Balances navigation complexity with total wheel time.
The drive from Lander, WY to Casper, WY is easy. At 2h 54m with 97% highway, most drivers will find it relaxed and low-stress.
Where does it get tricky?
The main spots that need attention: at 0.4 miles (WY 789): Lane positioning matters here; at 143.7 miles: Exit ramp - move to the correct lane early; at 146.2 miles (US 20; US 26; US 87): Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
Critical Maneuvers
5 of 6 key points
These are the spots where you need to pay the most attention. Preview them before you drive.
6
0.4 mi into trip|~0m in|WY 789
Turn left onto WY 789
Lane positioning matters here
Use the straight / left lanes.
4
143.7 mi into trip|~2h 44m in
Take the exit
Exit ramp - move to the correct lane early
5
146.2 mi into trip|~2h 47m in|US 20; US 26; US 87
Take the exit onto US 20; US 26; US 87 toward US 20 East, US 26 East, US 87 South: North Beverly Street, Bryan Stock Trail
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Toward US 20 East, US 26 East, US 87 South: Nor...
4
146.5 mi into trip|~2h 48m in|I 25 Business / Bryan Stock Trail
At end of road, turn left onto I 25 Business / Bryan Stock Trail
Navigation decision point
4
147.7 mi into trip|~2h 50m in|East Sunlight Drive
Turn left onto East Sunlight Drive
Navigation decision point
Main Roads
Road
Distance
Duration
US 20
80 mi
1h 31m
WY 789
63.7 mi
1h 13m
Bryan Stock Trail
1.1 mi
2m
East Sunlight Drive
0.9 mi
3m
Main Street
0.4 mi
<1m
North Sunlight Drive
—
—
Some road-level metrics are being recalculated.
Longest stretch:
US 20
— 80 mi, about 1h 31m
Turn-by-Turn Driving Directions
Step-by-step road directions between Lander, WY and Casper, WY.
1
Start on US 287
0.4 mi·40 sec·Main Street
2
Turn left onto WY 789
64 mi·1 hr 13 min·WY 789
Use the straight / left lanes.
3
Continue on US 20; US 26
77 mi·1 hr 27 min·US 20; US 26
4
Turn left onto US 20; US 26
2.7 mi·3 min·US 20; US 26
5
Take the exit
2.5 mi·3 min
6
Take the exit onto US 20; US 26; US 87
0.3 mi·41 sec·US 20; US 26; US 87
Toward US 20 East, US 26 East, US 87 South: North Beverly Street, Bryan Stock Trail
7
At end of road, turn left onto I 25 Business
1.1 mi·2 min·Bryan Stock Trail
8
Turn left onto East Sunlight Drive
0.9 mi·3 min·East Sunlight Drive
9
Arrive at destination
North Sunlight Drive
Trip Plan
Given the relatively short duration of 2 hours and 54 minutes, this trip is perfectly suited for a single day, and you can depart anytime that suits your schedule. There's only one recommended stop, suggesting you won't need to break up the drive significantly. With a fuel cost estimated at $24, it's wise to ensure your tank is at least half full before leaving Lander to comfortably reach Casper. Keep an eye on your fuel gauge, especially during the longest stretch of 80 miles on US 20, as services might be spaced out.
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.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 74.3 miles from Lander, WY, or about 1h 25m into the drive.
The longest continuous stretch on this route runs about 80 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 33 miles or 38m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 74.3 miles or 1h 25m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 2h 19m
Traffic, exits, and arrival timing usually matter more near Casper, WY than in the middle of the route.
Before You Leave
+
Open the route before leaving Lander, WY so your first major turns are already loaded.
+
Leave with enough water and a charging cable within reach, not packed away.
+
Check your fuel range against the first long segment, especially if you are starting outside city service areas.
Day 1
Settle into the route from Lander, WY
This is one driving day of about 148.6 miles and 2h 54m.
Your first comfortable stop window is around 33 miles from Lander, WY.
This route can stay practical as a one-day drive if traffic stays reasonable.
Plan about 1 real break rather than only quick fuel stops.
The longest stretch is on US 20 for about 80 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 74.3 mi from Lander, WY
· 1h 25m into the drive
Place data sourced from public business listings. Hours and availability may vary.
Fuel & Cost
Regular Gas
$23.55 one way
$47.10 round trip
$4.03/gal25.4 MPG avg52 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.22
$24.68
$49.37
premium
$4.53
$26.51
$53.02
diesel
$5.61
$32.81
$65.62
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$24
Meals
$25–$50
Total
$49–$74
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 52 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $16 in charging
· 0 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
44.6
0
$15.60
$7.13
Efficient EV
37.2
0
$13.00
$5.94
EV Truck/SUV
59.4
0
$20.80
$9.51
Gas CO2
52 kg
EV CO2
17 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
Lander, WY
Night
in Lander on Friday
Local time
9:13 PM
MDT
Current temp
67°F
Unavailable
Live forecast
Destination
Casper, WY
Night
in Casper on Friday
Local time
9:13 PM
MDT
Current temp
44°F
Unavailable
Live forecast
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
23 degrees cooler at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
2h 54m 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 Lander, WY to Casper, WY covers 148.6 miles and takes about 2h 54m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are US 20, WY 789, 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 74.3 miles from Lander, WY. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $23.55 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.
Plan about 1 meaningful break for fuel, food, or rest. A short stop every 2 to 3 hours is enough for this drive.
The drive from Lander, WY to Casper, WY is easy. At 2h 54m with 97% highway, most drivers will find it relaxed and low-stress.
The main spots that need attention: at 0.4 miles (WY 789): Lane positioning matters here; at 143.7 miles: Exit ramp - move to the correct lane early; at 146.2 miles (US 20; US 26; US 87): Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
The route from Lander, WY to Casper, WY does not surface many named destination signs beyond the main corridor.
