Origin
Green River, WY
Morning in Green River on Thursday
Local time
11:55 AM
MDT
Current temp
65°F
Unavailable
Live forecast
Trip from Green River, WY to Bar Nunn, WY
Last recalculated Apr 16, 2026
Drive Time
4h 25m
Distance
244.8 mi
394 km
Drive Score
8/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$39
one way
EV Charging
Unknown
Best Time to Leave
4 AM
4h 12m
★
6 AM
4h 26m
8 AM
4h 52m
10 AM
4h 35m
12 PM
4h 32m
3 PM
4h 36m
5 PM
4h 51m
8 PM
4h 18m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Green River, WY
Wikimedia Commons
Bar Nunn, WY
Valeria Boltneva
Trip Overview
The drive from Green River, WY to Bar Nunn, WY covers 244.8 miles and takes about 4h 25m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on East Flaming Gorge Way, I 80 East, Dwight D for much of the mileage, and the overall profile is turn-heavy local drive. At current regular gas prices, budget about $38.79 one way before food or hotel costs.
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
122.4 miles from Green River, WY
A natural place for your longest stop of the day , about 2h 12m into the drive .
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 4h 25m. Total distance: 244.8 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
4h 25m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (0%). Straightforward navigation.
Scenic Drive
Turn-heavy local drive route profile.
Drive Character
Expect a 4h 25m drive with frequent turns across 244.8 miles of local and secondary roads.
This route has more turning and local-road decision points than a simple highway run.
There are about 17 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
East Flaming Gorge Way is one of the defining roads on this drive.
How Hard Is This Drive?
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.
Driving Effort
3/10
Easy - simple navigation with a manageable amount of wheel time
Balances navigation complexity with total wheel time.
This is a straightforward 4h 25m drive. You will face about 0 decision points, but nothing that requires special attention if you follow navigation.
Where does it get tricky?
This route does not have any notably tricky sections. Most of the drive from Green River, WY to Bar Nunn, WY is straightforward, with well-signed roads and simple exits.
Main Roads
| Road | Distance | Duration |
|---|---|---|
| East Flaming Gorge Way | — | — |
| I 80 East | — | — |
| Dwight D | — | — |
| I 80 | — | — |
| West Spruce Street | — | — |
| 3rd Street | — | — |
| Casper West Belt | — | — |
| I 25 North | — | — |
Some road-level metrics are being recalculated.
Longest stretch:
East Flaming Gorge Way
— detailed segment metrics are refreshing.
Turn-by-Turn Driving Directions
Step-by-step road directions between Green River, WY and Bar Nunn, WY.
1
Start on North 1st East
36 ft
·
7 sec
·
North 1st East
2
Turn left onto East Flaming Gorge Way
1.1 mi
·
2 min
·
East Flaming Gorge Way
3
Take the ramp straight toward I 80 East, US 30 East: Rock Springs
0.7 mi
·
1 min
·
I 80 East, US 30 East: Rock Springs
4
Merge slight left onto Dwight D. Eisenhower Highway
119 mi
·
1 hr 55 min
·
Dwight D. Eisenhower Highway
5
Take the exit slight right toward I 80 Business East, WY 789 North: Rawlins
0.4 mi
·
52 sec
·
I 80 Business East, WY 789 North: Rawlins
6
Turn left onto West Spruce Street
1.7 mi
·
2 min
·
West Spruce Street
7
Turn left onto 3rd Street
44 mi
·
50 min
·
3rd Street
8
Continue straight
64 mi
·
1 hr 12 min
9
Turn left onto Casper West Belt
7.3 mi
·
8 min
·
Casper West Belt
10
Continue straight
3.0 mi
·
3 min
11
Turn left onto I 25 North, US 87 North: Midwest
0.4 mi
·
51 sec
·
I 25 North, US 87 North: Midwest
12
Merge slight left
1.4 mi
·
1 min
13
Take the exit slight right toward Wardwell Road
0.3 mi
·
50 sec
·
Wardwell Road
14
Turn left onto Howard Street
0.2 mi
·
25 sec
·
Howard Street
15
Turn right onto Salt Creek Highway
1.1 mi
·
1 min
·
Salt Creek Highway
16
Turn left onto Sunset Boulevard
0.3 mi
·
37 sec
·
Sunset Boulevard
17
Arrive at your destination
Trip Plan
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 122.4 miles from Green River, WY, or about 2h 12m into the drive.
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 54 miles or 58m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 122.4 miles or 2h 12m 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 37m
Traffic, exits, and arrival timing usually matter more near Bar Nunn, WY than in the middle of the route.
Before You Leave
+
Open the route before leaving Green River, 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 Green River, WY
This is one driving day of about 244.8 miles and 4h 25m.
Your first comfortable stop window is around 54 miles from Green River, 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.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 122.4 mi from Green River, WY · 2h 12m into the drive
Mid-route town
Meal stop
122 mi into the route
Best for: Lunch, fuel, and a longer reset
This sits close to the middle of the route, so it works well for the longest stop of the day.
Pacing Suggestions
Fuel and coffee
A short stop after about 54 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 122.4 miles from Green River, WY, which is a good place for a longer meal and fuel stop.
Arriving in Bar Nunn, WY
The final approach into Bar Nunn, WY usually feels slower than the middle of the drive, so avoid planning your tightest schedule at the very end.
Try to arrive with enough fuel left to skip an immediate station stop unless you already know the area around Bar Nunn, WY.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Fuel & Cost
Regular Gas
$38.79 one way
$77.58 round trip
$4.03/gal
25.4 MPG avg
86 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.22 | $40.66 | $81.32 |
| premium | $4.53 | $43.67 | $87.34 |
| diesel | $5.61 | $54.05 | $108.10 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$39
Meals
$25–$50
Total
$64–$89
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 85.7 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $26 in charging · 0 stops · 66% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 73.4 | 0 | $25.70 | $11.75 |
| Efficient EV | 61.2 | 0 | $21.42 | $9.79 |
| EV Truck/SUV | 97.9 | 1 | $34.27 | $15.67 |
Gas CO2
86 kg
EV CO2
29 kg (66% 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.
Destination
Bar Nunn, WY
Morning in Bar Nunn on Thursday
Local time
11:55 AM
MDT
Current temp
72°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
7 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 25m 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.
Frequently Asked Questions
The drive from Green River, WY to Bar Nunn, WY covers 244.8 miles and takes about 4h 25m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are East Flaming Gorge Way, I 80 East, Dwight D. Expect a mix of highway and local road driving.
This is a comfortable same-day trip.
The midpoint is about 122.4 miles from Green River, WY. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $38.79 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
An early start around 7-8 AM gets you there with plenty of daylight left. A late afternoon start means arriving after dark. Morning is better.
Plan about 1 meaningful break for fuel, food, or rest. Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
This is a straightforward 4h 25m drive. You will face about 0 decision points, but nothing that requires special attention if you follow navigation.
This route does not have any notably tricky sections. Most of the drive from Green River, WY to Bar Nunn, WY is straightforward, with well-signed roads and simple exits.
The route from Green River, WY to Bar Nunn, WY does not surface many named destination signs beyond the main corridor.
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