Casper to Rawlins is 122.8 miles and takes about 2h 25m via County Road 308 and US 287, with a fuel budget near $19 and enough daylight to finish in a day. This trip stays within Wyoming, connecting two points in the Mountain West region. Expect a mix of highway cruising and surface roads as you make your way across the state. Given the relatively short duration, this is a straightforward drive that can be completed comfortably in a single day.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Midpoint
61.4 miles from Casper, WY
A natural place for your longest stop of the day
, about 1h 14m into the drive
.
Main Roads
Road
Distance
Duration
County Road 308
63.7 mi
1h 12m
US 287
44.1 mi
50m
Casper West Belt
7.3 mi
8m
US 20
5.1 mi
6m
Bryan Stock Trail
1.1 mi
1m
East Sunlight Drive
0.5 mi
1m
North Sunlight Drive
0.3 mi
1m
East F Street
0.2 mi
<1m
Longest stretch:
County Road 308
— 63.7 mi, about 1h 12m
Turn-by-Turn Driving Directions
Step-by-step road directions between Casper, WY and Rawlins, 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
Turn right onto US 20; US 26; US 87
0.2 mi·16 sec·East F Street
6
Take the ramp onto US 20; US 26; US 87
2.1 mi·2 min·US 20; US 26; US 87
7
Take the exit
0.3 mi·45 sec
Toward US 20 West, US 26 West, WY 220 West: Shoshoni, Port of Entry
8
Keep slight left at fork
350 ft·10 sec
9
Turn left onto US 20; US 26
3.0 mi·3 min·US 20; US 26
10
Continue on WY 257
7.3 mi·8 min·Casper West Belt
11
Turn right onto WY 220
64 mi·1 hr 12 min·County Road 308
12
Continue on US 287; WY 789
44 mi·50 min·US 287; WY 789
13
Turn left onto West Spruce Street
50 ft·1 sec·West Spruce Street
14
Arrive at destination
West Spruce Street
Trip Plan
For this 2-hour, 25-minute drive, leaving Casper in the morning is ideal, allowing you to reach Rawlins with plenty of daylight. Since the total distance is only 122.8 miles, you have flexibility with stops. Keep an eye on your fuel gauge, especially during the 63.7-mile stretch on County Road 308, as services may be less frequent. The estimated fuel cost is around $19. There are no designated stops in the provided data, so plan your breaks based on your personal needs.
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 61.4 miles from Casper, WY, or about 1h 14m into the drive.
The longest continuous stretch on this route runs about 63.7 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 27 miles or 35m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 61.4 miles or 1h 14m 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 59m
Traffic, exits, and arrival timing usually matter more near Rawlins, 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.
+
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 Casper, WY
This is one driving day of about 122.8 miles and 2h 25m.
Your first comfortable stop window is around 27 miles from Casper, WY.
This route can stay practical as a one-day drive if traffic stays reasonable.
The longest stretch is on County Road 308 for about 63.7 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.
Heads-up: tricky spots
5 of 7
5 decision points cluster between mile 0.3 and 4.7 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
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
3
2 mi into trip|~5m in|US 20; US 26; US 87 / East F Street
Turn right onto US 20; US 26; US 87 / East F Street
Navigation decision point
5
4.3 mi into trip|~8m in
Take the exit toward US 20 West, US 26 West, WY 220 West: Shoshoni, Port of Entry
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Toward US 20 West, US 26 West, WY 220 West: Sho...
4
4.7 mi into trip|~9m in
Keep slight left at fork
Highway fork - watch signs carefully
Fuel & Cost
Regular Gas
$19.46 one way
$38.92 round trip
$4.03/gal25.4 MPG avg43 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.22
$20.40
$40.79
premium
$4.53
$21.91
$43.81
diesel
$5.61
$27.11
$54.23
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$19
Meals
$25–$50
Total
$44–$69
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 43 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $13 in charging
· 0 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
36.8
0
$12.89
$5.89
Efficient EV
30.7
0
$10.75
$4.91
EV Truck/SUV
49.1
0
$17.19
$7.86
Gas CO2
43 kg
EV CO2
14 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 20, 2026
Origin
Casper, WY
Late night
in Casper on Tuesday
Local time
2:57 AM
MDT
Current temp
53°F
Unavailable
Live forecast
Destination
Rawlins, WY
Late night
in Rawlins on Tuesday
Local time
2:57 AM
MDT
Current temp
49°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
4 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 25m 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.
More Details
What kind of drive is this?
You'll spend about 40% of this 122.8-mile drive on highways. The longest continuous stretch without a major road change is 63.7 miles on County Road 308. After this segment, expect the road surface to change, transitioning from highway driving to other road types. Keep an eye out for the shift as you'll encounter more rural cruising.
40% highway, the rest on surface roads — varied driving throughout.
14 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 63.7 mi on County Road 308.
How Hard Is This Drive?
2/10
This route mixes highway mileage with some local-road sections near the start or finish. Navigation is very simple - set it and forget it for most of the drive. The trickiest moment comes around 0.3 miles in.
Driving Effort2/10
Very easy - short and simple to drive
Balances navigation complexity with total wheel time.
The drive from Casper, WY to Rawlins, WY is easy. At 2h 25m with 40% 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 miles (US 20; US 26; US 87 / East F Street): Navigation decision point.
Casper is a city in Central Wyoming with a population of 59,000 people (2020). If you're passing through the state, Casper is a likely choice for an overnight stop or as a place to find food and supplies before heading to the national parks in the state's northwestern corner or to the forests located to the southeast or to the north.
The city has a few attractions to entertain visitors for a day or so, but the real attraction lies in the surrounding areas, which include some of the state's most interesting historical and natural sites. Independence Rock, South Pass City, Ayre's Bridge, Castle Gardens and two national forests are within a 60-mile (100-km) drive of downtown Casper. The Oregon and California trails once passed through the city and visible signs of their presence can be found within a stone's throw of the city's boundaries.
The longest stretch is about 63.7 miles on County Road 308. The full list of main roads is in the Roads section above.
Yes — we found about 3 rest areas or service plazas within a short detour of the route (from OpenStreetMap). See the Rest Stops tab under Nearby Places for locations and mile markers. Plan to stretch, use the bathroom, and top off fluids every 2–3 hours on longer drives.
Yes, with realistic expectations. Build in a stop roughly every 2 hours, have snacks and activities ready, and check the Nearby Places tabs for kid-friendly stops along the way.
Mostly yes along the main roads, but rural stretches through WY can have sparse or no coverage. Before you leave, download offline Google Maps or Apple Maps for the route, and consider downloading music or podcasts instead of streaming. If you depend on data for navigation, keep a paper backup of the turn-by-turn directions.
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 miles (US 20; US 26; US 87 / East F Street): Navigation decision point.
Yes. A round trip is manageable in a single day if you plan a break at Rawlins, WY before heading back.
