Mountain View, WY to Green River, WY is 239 miles and takes about 4h 17m via Dwight D. Eisenhower Highway, with a fuel budget near $42 and enough daylight to finish in a day. This trip stays within Wyoming, connecting two points in the Mountain West region. Expect a drive primarily on surface roads, making it a good option if you prefer a more relaxed pace over high-speed highway cruising. With only one recommended stop and a relatively short duration, this route offers flexibility for your schedule.
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 Mountain View, WY
A natural place for your longest stop of the day
, about 2h 18m into the drive
.
Main Roads
Road
Distance
Duration
Dwight D. Eisenhower Highway
119.1 mi
1h 55m
County Road 308
63.7 mi
1h 12m
US 287
44.1 mi
50m
Casper West Belt
7.3 mi
8m
I 80 Bus
1.9 mi
4m
West Spruce Street
1.5 mi
2m
West Yellowstone Highway
0.8 mi
1m
WY 789
0.6 mi
1m
Longest stretch:
Dwight D. Eisenhower Highway
— 119.1 mi, about 1h 55m
Traffic on I-80
Hour-of-day weekday pattern from 24 FHWA count stations on your route.
Peak
4 PM
~665 veh/hr typical
· worst 930
Quietest
2 AM
~95 veh/hr
Peak-to-quiet ratio
7×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 103 weeks of 2023 FHWA Travel Monitoring Analysis System data. Weekday hours only (Mon–Fri).
Turn-by-Turn Driving Directions
Step-by-step road directions between Mountain View, WY and Green River, WY.
1
Start on US 20 Business; US 26 Business
0.8 mi·1 min·West Yellowstone Highway
2
Turn left onto WY 257
7.3 mi·8 min·Casper West Belt
3
Turn right onto WY 220
64 mi·1 hr 12 min·County Road 308
4
Continue on US 287; WY 789
44 mi·50 min·US 287; WY 789
5
Turn right onto I 80 Bus; US 30 Bus; WY 789
1.5 mi·2 min·West Spruce Street
6
Take the ramp onto WY 789
0.6 mi·1 min·WY 789
7
Merge onto I 80; US 30; WY 789
119 mi·1 hr 55 min·Dwight D. Eisenhower Highway
8
Take the exit onto I 80 Bus; US 30 Bus
1.9 mi·4 min·I 80 Bus; US 30 Bus
Toward I 80 Business West, US 30 Business West: Green River
9
Turn right onto North 1st East
35 ft·1 sec·North 1st East
10
Arrive at destination
North 1st East
Trip Plan
Given the 4h 17m duration, leaving in the morning will give you ample time to reach Green River before evening. Plan for your single stop to coincide with a fuel refill, as the estimated cost is $42. The longest stretch without a stop is over 100 miles, so ensure you have snacks and drinks before departing Mountain View. Since this is a single-day drive, you have the flexibility to depart later if needed, but be mindful of the daylight hours, especially if you encounter any unexpected delays on the surface roads.
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 Mountain View, WY, or about 2h 18m into the drive.
The longest continuous stretch on this route runs about 119.1 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 1m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 119.5 miles or 2h 18m 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 32m
Traffic, exits, and arrival timing usually matter more near Green River, WY than in the middle of the route.
Before You Leave
+
Open the route before leaving Mountain View, 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 Mountain View, WY
This is one driving day of about 239 miles and 4h 17m.
Your first comfortable stop window is around 53 miles from Mountain View, 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 Dwight D. Eisenhower Highway for about 119.1 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 0.8 and 238.9 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
3
0.8 mi into trip|~1m in|WY 257 / Casper West Belt
Turn left onto WY 257 / Casper West Belt
Navigation decision point
3
8.1 mi into trip|~10m in|WY 220 / County Road 308
Turn right onto WY 220 / County Road 308
Navigation decision point
3
115.9 mi into trip|~2h 13m in|I 80 Bus; US 30 Bus; WY 789 / West Spruce Street
Turn right onto I 80 Bus; US 30 Bus; WY 789 / West Spruce Street
Navigation decision point
5
237.1 mi into trip|~4h 12m in|I 80 Bus; US 30 Bus
Take the exit onto I 80 Bus; US 30 Bus toward I 80 Business West, US 30 Business West: Green River
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Toward I 80 Business West, US 30 Business West:...
4
238.9 mi into trip|~4h 17m in|North 1st East
Turn right onto North 1st East
Navigation decision point
Fuel & Cost
Regular Gas
$43.05 one way
$86.10 round trip
$4.58/gal25.4 MPG avg84 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.78
$44.96
$89.92
premium
$5.11
$48.04
$96.09
diesel
$6.18
$58.14
$116.28
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$43
Meals
$25–$50
Total
$68–$93
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, 2026-10-12.
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 Oct 17, 2026
Origin
Mountain View, WY
Morning
in Mountain View on Saturday
Local time
6:30 AM
MDT
Current temp
36°F
Mostly Clear
SW 9 to 23 mph0% chanceLive forecast
High Wind Warning
High Wind Warning issued October 16 at 12:31PM MDT until October 17 at 7:00PM MDT by NWS Cheyenne WY
Destination
Green River, WY
Morning
in Green River on Saturday
Local time
6:30 AM
MDT
Current temp
59°F
Sunny
WNW 3 mph0% chanceLive forecast
High Wind Warning
High Wind Warning issued October 16 at 12:31PM MDT until October 17 at 7:00PM MDT by NWS Cheyenne WY
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 warmer at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
4h 17m 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?
This drive is mostly surface roads, with only 19% of the route on the Dwight D. Eisenhower Highway. You'll experience a long stretch of 119.1 miles on the Dwight D. Eisenhower Highway before transitioning to County Road 308 and US 287. The majority of your time will be spent on surface roads, offering a more rural cruising experience.
Only 19% highway — the rest is turn-by-turn surface driving.
10 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 119.1 mi on Dwight D. Eisenhower 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 0.8 miles in near WY 257 / Casper West Belt.
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 17m drive. You will face about 7 decision points, but nothing that requires special attention if you follow navigation.
Where does it get tricky?
The main spots that need attention: at 0.8 miles (WY 257 / Casper West Belt): Navigation decision point; at 8.1 miles (WY 220 / County Road 308): Navigation decision point; at 115.9 miles (I 80 Bus; US 30 Bus; WY 789 / West Spruce Street): Navigation decision point.
The longest stretch is about 119.1 miles on Dwight D. Eisenhower Highway. The full list of main roads is in the Roads section above.
Yes — we found about 7 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 0.8 miles (WY 257 / Casper West Belt): Navigation decision point; at 8.1 miles (WY 220 / County Road 308): Navigation decision point; at 115.9 miles (I 80 Bus; US 30 Bus; WY 789 / West Spruce Street): Navigation decision point.
Possible but tiring. At 4.3 hours each way, an in-and-out day trip would put you behind the wheel for 8.6 hours — manageable with a long break at Green River, WY, but most travelers stay overnight.
