Spanning 239 miles through the Mountain West, this trip from Casper to Powell typically takes about 4 hours and 39 minutes of driving time. Because the route is categorized as a turn-heavy local drive, it is best suited for a single, focused day of travel rather than an overnight split. You should budget approximately $37 for fuel to complete the journey. Navigating this route involves transitioning through West Yellowstone Highway, Broadway Street, and Idaho Street. While it is manageable in one go, the winding nature of the roads means you should plan for a steady pace rather than rushing. This drive provides a direct connection between two Wyoming hubs, offering a practical way to traverse the region.
Trip Pace
Same-day drive is realistic
A same-day return is possible, but it will make for a full day on the road.
Break Rhythm
1 planned break
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
119.5 miles from Casper, WY
A natural place for your longest stop of the day
, about 2h 21m into the drive
.
Main Roads
Road
Distance
Duration
West Yellowstone Highway
93.8 mi
1h 46m
Broadway Street
81.5 mi
1h 29m
Idaho Street
31.7 mi
38m
Powell Highway
14.7 mi
15m
US 20
5.1 mi
6m
Medicine Wheel Passage
4.2 mi
4m
Beacon Hill Road
1.8 mi
3m
Main Street
1.2 mi
2m
Longest stretch:
West Yellowstone Highway
— 93.8 mi, about 1h 46m
Turn-by-Turn Driving Directions
Step-by-step road directions between Casper, WY and Powell, 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
Turn right onto US 20; US 26
94 mi·1 hr 46 min·West Yellowstone Highway
11
Turn right onto US 20; WY 789
32 mi·38 min·Idaho Street
12
Turn left onto South 8th Street
0.5 mi·2 min·South 8th Street
Use the straight / left lanes.
13
Turn left onto WY 120
82 mi·1 hr 29 min·Broadway Street
Use the straight / right lanes.
14
At end of road, turn right onto US 14; US 16; US 20
0.5 mi·53 sec·Greybull Highway
15
Turn left onto CR 3CX
1.8 mi·3 min·Beacon Hill Road
16
Turn right onto US 14A
15 mi·15 min·Powell Highway
17
Continue on US 14A
1.2 mi·2 min·Main Street
18
Continue on US 14A
4.2 mi·4 min·Medicine Wheel Passage
19
Continue on US 14A
1.2 mi·2 min·West Coulter Avenue
20
Turn left onto South Bent Street
0.2 mi·26 sec·South Bent Street
21
Arrive at destination
North Bent Street
Trip Plan
Since this is a turn-heavy route, planning for at least one dedicated stop is essential to stay refreshed throughout the 4 hour and 39 minute duration. Aim to depart early in the day to take full advantage of the daylight hours, as the local roads can be more challenging to navigate after dark. Because the drive relies heavily on local streets like Broadway and Idaho, keep a close watch on your fuel gauge and consider topping off before heading into the more remote stretches. Use the 93.8-mile segment on the West Yellowstone Highway as your primary marker for pacing your breaks. Staying flexible with your timing is a major advantage on this route, allowing you to manage the technical turns at a speed that feels comfortable for your vehicle.
Morning Departure
An early start around 7-8 AM gets you there with plenty of daylight left.
Evening Departure
A late afternoon start means arriving after dark. Morning is better.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 119.5 miles from Casper, WY, or about 2h 21m into the drive.
The longest continuous stretch on this route runs about 93.8 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 53 miles or 1h 4m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 119.5 miles or 2h 21m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 3h 48m
Traffic, exits, and arrival timing usually matter more near Powell, 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 239 miles and 4h 39m.
Your first comfortable stop window is around 53 miles from Casper, 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 West Yellowstone Highway for about 93.8 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 13
5 decision points cluster between mile 0.3 and 133.7 — 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
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...
5
133.2 mi into trip|~2h 37m in|South 8th Street
Turn left onto South 8th Street
Lane positioning matters here
Use the straight / left lanes.
6
133.7 mi into trip|~2h 40m in|WY 120 / Broadway Street
Turn left onto WY 120 / Broadway Street
Lane positioning matters here
Use the straight / right lanes.
Fuel & Cost
Regular Gas
$37.87 one way
$75.75 round trip
$4.03/gal25.4 MPG avg84 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.22
$39.70
$79.40
premium
$4.53
$42.63
$85.27
diesel
$5.61
$52.77
$105.54
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$38
Meals
$25–$50
Total
$63–$88
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 83.6 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $25 in charging
· 0 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
71.7
0
$25.10
$11.47
Efficient EV
59.8
0
$20.91
$9.56
EV Truck/SUV
95.6
1
$33.46
$15.30
Gas CO2
84 kg
EV CO2
28 kg (67% less)
Plan for 0 charging stops, roughly every 270 miles. Allow 25-40 minutes per stop at a DC fast charger.
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
Evening
in Casper on Saturday
Local time
8:46 PM
MDT
Current temp
44°F
Unavailable
Live forecast
Destination
Powell, WY
Evening
in Powell on Saturday
Local time
8:46 PM
MDT
Current temp
43°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
1 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
4h 39m on the road
An early start around 7-8 AM gets you there with plenty of daylight left.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
More Details
What kind of drive is this?
Expect a hands-on experience behind the wheel, as this route is defined by its turn-heavy local profile rather than high-speed interstate cruising. Only 2% of the journey consists of highway travel, so you will spend the vast majority of your time on local roads. The longest uninterrupted segment occurs on the West Yellowstone Highway, stretching for 93.8 miles. As you move away from the initial departure point, the road demands your full attention due to its technical nature. The transition between different road types creates a shifting rhythm that keeps the drive engaging for those who prefer navigating local routes over monotonous highway stretches.
Only 2% highway — the rest is turn-by-turn surface driving.
21 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 93.8 mi on West Yellowstone Highway.
How Hard Is This Drive?
3/10
Expect a hands-on drive with frequent turns and local roads rather than long highway stretches. There are only a few real navigation decisions along the way. The trickiest moment comes around 0.3 miles in.
Driving Effort3/10
Easy - simple navigation with a manageable amount of wheel time
Balances navigation complexity with total wheel time.
This is a straightforward 4h 39m drive. You will face about 13 decision points, but nothing that requires special attention if you follow navigation.
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 4.3 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 4h 39m. Total distance: 239 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
The longest stretch is about 93.8 miles on West Yellowstone Highway. The full list of main roads is in the Roads section above.
We did not find dedicated rest areas on this route. For a drive this long, plan bathroom and stretch breaks around gas stations, fast-food stops, or small-town downtowns — check the Nearby Places section for options.
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 4.3 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
Possible but tiring. At 4.7 hours each way, an in-and-out day trip would put you behind the wheel for 9.3 hours — manageable with a long break at Powell, WY, but most travelers stay overnight.
