Origin
Newcastle, WY
Night in Newcastle on Friday
Local time
9:01 PM
MDT
Current temp
76°F
Unavailable
Live forecast
Trip from Newcastle, WY to Green River, WY
Compiled and reviewed by the Trip.ovh planning team at COD Solutions Oy · Last reviewed Apr 18, 2026 · Editorial standards
Drive Time
7h 45m
Distance
402.9 mi
648 km
Drive Score
9/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$64
one way
EV Charging
Unknown
Best Time to Leave
4 AM
7h 36m
★
6 AM
7h 45m
8 AM
8h 4m
10 AM
7h 52m
12 PM
7h 50m
3 PM
7h 53m
5 PM
8h 3m
8 PM
7h 40m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Newcastle, WY
Daniel Smyth
Green River, WY
Wikimedia Commons
Trip Overview
The drive from Newcastle, WY to Green River, WY covers 402.9 miles and takes about 7h 45m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on Dwight D. Eisenhower Highway, County Road 308, WY 387 for much of the mileage, and the overall profile is mixed drive. The longest uninterrupted segment is about 119.1 miles on Dwight D. Eisenhower Highway. At current regular gas prices, budget about $63.85 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
2 planned breaks
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
201.5 miles from Newcastle, WY
A natural place for your longest stop of the day , about 4h 11m into the drive .
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 7h 45m. Total distance: 402.9 miles.
Family Friendly
Moderate complexity with 2 natural rest stops along the way.
Solo Traveler
7h 45m drive, plan rest stops for pacing.
First-Time Driver
Mostly highway driving (47%). Some complex stretches to watch for.
Drive Character
The drive from Newcastle, WY to Green River, WY covers 402.9 miles and takes about 7h 45m, using a mix of highways and local roads.
Expect a mix of faster highway mileage and slower local approaches near the beginning or end.
There are about 21 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
Dwight D. Eisenhower Highway is the longest continuous segment at about 119.1 miles.
How Hard Is This Drive?
This route mixes highway mileage with some local-road sections near the start or finish. You will hit about 15 points where you need to pay attention to lane position or signs. The trickiest moment comes around 122.9 miles in near WY 259.
Driving Effort
5/10
Moderate - straightforward overall, but long enough or busy enough to require pacing
Balances navigation complexity with total wheel time.
This drive requires moderate attention. Across 402.9 miles you will encounter 15 spots where lane choice or exit timing matters. Not difficult for experienced highway drivers, but worth previewing the tricky sections before you go.
Where does it get tricky?
The main spots that need attention: at 122.9 miles (WY 259): Navigation decision point; at 141 miles: Exit ramp - move to the correct lane early; at 161.6 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
Critical Maneuvers
5 of 15 key pointsThese are the spots where you need to pay the most attention. Preview them before you drive.
4
122.9 mi into trip
|
~2h 44m in
|
WY 259
Turn left onto WY 259
Navigation decision point
6
141 mi into trip
|
~3h 5m in
Take the exit toward I 25 South: Casper
Exit ramp - move to the correct lane early
Toward I 25 South: Casper
5
161.6 mi into trip
|
~3h 25m 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
161.9 mi into trip
|
~3h 25m in
Keep slight left at fork
Highway fork - watch signs carefully
5
401.1 mi into trip
|
~7h 40m 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:...
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
On the drive from Newcastle, WY to Green River, WY, road signs begin pointing toward Port Of Entry along the way.
Port Of Entry
161.6 mi in
|
~3h 25m
Main Roads
| Road | Distance | Duration |
|---|---|---|
| Dwight D. Eisenhower Highway | 119.1 mi | 1h 55m |
| County Road 308 | 63.7 mi | 1h 12m |
| WY 387 | 51.3 mi | 58m |
| Highway 450 | 45.6 mi | 1h 7m |
| US 287 | 44.1 mi | 50m |
| Clareton Highway | 20.6 mi | 30m |
| I 25 | 20.1 mi | 18m |
| WY 259 | 18.1 mi | 20m |
Longest stretch:
Dwight D. Eisenhower Highway
— 119.1 mi, about 1h 55m
Turn-by-Turn Driving Directions
Step-by-step road directions between Newcastle, WY and Green River, WY.
1
Start on US 16
2.1 mi
·
3 min
·
West Main Street
2
Continue on US 16
0.7 mi
·
1 min
·
US Highway 16
3
Turn left onto WY 450
46 mi
·
1 hr 7 min
·
Highway 450
4
Continue on WY 450
21 mi
·
30 min
·
Clareton Highway
5
Turn right onto WY 59
2.7 mi
·
3 min
·
State Highway 59 South
6
Turn left onto WY 387
51 mi
·
58 min
·
WY 387
7
Turn left onto WY 259
18 mi
·
20 min
·
WY 259
8
Take the exit
0.4 mi
·
52 sec
Toward I 25 South: Casper
9
Merge onto I 25; US 87
20 mi
·
18 min
·
I 25; US 87
10
Take the exit
0.3 mi
·
42 sec
Toward US 20 West, US 26 West, WY 220 West: Shoshoni, Port of Entry
11
Keep slight left at fork
0.1 mi
·
17 sec
12
Turn right onto US 20; US 26
2.7 mi
·
3 min
·
US 20; US 26
13
Continue on WY 257
7.3 mi
·
8 min
·
Casper West Belt
14
Turn right onto WY 220
64 mi
·
1 hr 12 min
·
County Road 308
15
Continue on US 287; WY 789
44 mi
·
50 min
·
US 287; WY 789
16
Turn right onto I 80 Bus; US 30 Bus; WY 789
1.5 mi
·
2 min
·
West Spruce Street
17
Take the ramp onto WY 789
0.6 mi
·
1 min
·
WY 789
18
Merge onto I 80; US 30; WY 789
119 mi
·
1 hr 55 min
·
Dwight D. Eisenhower Highway
19
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
20
Turn right onto North 1st East
35 ft
·
1 sec
·
North 1st East
21
Arrive at destination
North 1st East
Trip Plan
Morning Departure
Start early — leave by 6-7 AM to arrive at a reasonable hour.
Evening Departure
This is a long drive — plan for a morning departure or consider splitting it into two days.
You can normally do this drive in one day.
Plan roughly 2 meaningful breaks for fuel, food, and rest.
The halfway point lands around 201.5 miles from Newcastle, WY, or about 4h 11m 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 89 miles or 2h 5m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 201.5 miles or 4h 11m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 6h 44m
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 Newcastle, 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.
+
Pick one backup stop option before the midpoint in case traffic changes your pacing.
Day 1
Settle into the route from Newcastle, WY
This is one driving day of about 402.9 miles and 7h 45m.
Your first comfortable stop window is around 89 miles from Newcastle, WY.
This route can stay practical as a one-day drive if traffic stays reasonable.
Plan about 2 real breaks 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.
Halfway Point
Midpoint
About 201.5 mi from Newcastle, WY · 4h 11m into the drive
Mid-route town
Meal stop
201 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 89 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 201.5 miles from Newcastle, WY, which is a good place for a longer meal and fuel stop.
Before the longest stretch
Fuel checkTop up before Dwight D. Eisenhower Highway if your tank is already low. That segment runs about 119.1 miles.
Arriving in Green River, WY
The final approach into Green River, 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 Green River, WY.
After long uninterrupted mileage, take five minutes before the last urban segment to reset and refocus on exits, merges, and city traffic.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Fuel & Cost
Regular Gas
$63.85 one way
$127.69 round trip
$4.03/gal
25.4 MPG avg
141 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.22 | $66.92 | $133.85 |
| premium | $4.53 | $71.87 | $143.74 |
| diesel | $5.61 | $88.96 | $177.91 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$64
Meals
$25–$50
Total
$89–$114
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 141 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $42 in charging · 1 stop · 67% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 120.9 | 1 | $42.30 | $19.34 |
| Efficient EV | 100.7 | 1 | $35.25 | $16.12 |
| EV Truck/SUV | 161.2 | 2 | $56.41 | $25.79 |
Gas CO2
141 kg
EV CO2
47 kg (67% less)
Plan for 1 charging stop. A 30-minute DC fast charge mid-route should be enough to complete the trip comfortably.
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
Green River, WY
Night in Green River on Friday
Local time
9:01 PM
MDT
Current temp
65°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
11 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
7h 45m on the road
Start early — leave by 6-7 AM to arrive at a reasonable hour.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
Frequently Asked Questions
The drive from Newcastle, WY to Green River, WY covers 402.9 miles and takes about 7h 45m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are Dwight D. Eisenhower Highway, County Road 308, WY 387. Expect a mix of highway and local road driving.
This is a comfortable same-day trip.
The midpoint is about 201.5 miles from Newcastle, WY. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $63.85 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
Start early — leave by 6-7 AM to arrive at a reasonable hour. This is a long drive — plan for a morning departure or consider splitting it into two days.
Plan about 2 meaningful breaks for fuel, food, or rest. Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
This drive requires moderate attention. Across 402.9 miles you will encounter 15 spots where lane choice or exit timing matters. Not difficult for experienced highway drivers, but worth previewing the tricky sections before you go.
The main spots that need attention: at 122.9 miles (WY 259): Navigation decision point; at 141 miles: Exit ramp - move to the correct lane early; at 161.6 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
On the drive from Newcastle, WY to Green River, WY, road signs begin pointing toward Port Of Entry along the way.
How this page is built
Compiled by the Trip.ovh planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, and EIA for fuel prices. See our methodology for refresh cadence and limitations.
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