How far is Newcastle, WY from Casper, WY?
The driving distance from Newcastle, WY to Casper, WY is about 184.9 miles (297.6 km), with a travel time of about 03h 01m by car.
- The straight-line flight distance is about 126 miles (202.8 km).
- For a round trip, plan for roughly 06h 03m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM MDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 03h 01m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Town in Campbell County, Wyoming
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny then Slight Chance Showers And Thunderstorms
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Newcastle and Casper.
Turn-by-Turn Driving Directions
Step-by-step road directions between Newcastle and Casper.
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1
Start on West Main Street
2.1 mi · 3 min · West Main Street
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2
Continue on US Highway 16
1.2 km · 1 min · US Highway 16
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3
Turn left onto Highway 450
45.6 mi · 1 hr 8 min · Highway 450
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4
Continue on Clareton Highway
20.6 mi · 31 min · Clareton Highway
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5
Turn right onto State Highway 59 South
2.7 mi · 3 min · State Highway 59 South
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6
Turn left
51.3 mi · 59 min
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7
Turn left
18.1 mi · 21 min
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8
Take the exit left toward I 25 South: Casper
2173 ft · 53 sec
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9
Merge slight left
20.9 mi · 20 min
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10
Continue straight
2 mi · 3 min
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11
Take the exit slight right toward US 20 East, US 26 East, US 87 South: North Beverly Street, Bryan Stock Trail
1755 ft · 41 sec
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12
At the end of the road, turn left onto Bryan Stock Trail
1.1 mi · 2 min · Bryan Stock Trail
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13
Turn left onto East Sunlight Drive
1.5 km · 4 min · East Sunlight Drive
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14
Arrive at your destination
0 m · 1 sec · North Sunlight Drive
Car Route Details
A richer read on the saved driving route between Newcastle and Casper.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
Longest stretch
Turn left
51.3 mi · 00h 59m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Mostly Sunny then Slight Chance Showers And Thunderstorms leaving Newcastle and Mostly Sunny near Casper.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Newcastle to Casper?
The road trip is about 184.9 miles (297.6 km) and usually takes 03h 01m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Wright is a useful midpoint, sitting about 83.3 miles from Newcastle and 101.7 miles from Casper.
How much longer is the road route than the straight-line distance?
The direct path is about 126 miles (202.8 km), while the road route adds roughly 58.9 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 6:00 AM to 8:00 AM MDT. If you want a more comfortable same-day return, try to leave by 10:56 AM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $25.42 one way or $50.84 round trip. Estimated CO2 is about 58 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny then Slight Chance Showers And Thunderstorms around Newcastle and Mostly Sunny near Casper.
Stop Ideas Near Wright
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Wright.
Douglas, Wyoming
Flight Path Map
This map shows the direct air route between Newcastle and Casper. Straight-line distance: 125.99 mi (202.76 km).
#1 Newcastle
City in Weston County, Wyoming, United States
| Population | 3,314 |
| Coordinates | 43.8547000, -104.2049400 |
| Altitude | 1319 |
| Country | United States |
#2 Casper
The most populous city in Natrona County, Wyoming.
| Population | 58,498 |
| Coordinates | 42.8666300, -106.3130800 |
| Altitude | 1560 |
| Country | United States |
End: North Sunlight Drive (-106.309604, 42.868632)
Estimated Travel Time
Distance: 298 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 06h 09m |
| 40 mph (64.37 km/h) | 04h 37m |
| 50 mph (80.47 km/h) | 03h 41m |
| 60 mph (96.56 km/h) | 03h 04m |
| 70 mph (112.65 km/h) | 02h 38m |
| 80 mph (129 km/h) | 02h 18m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $25.42 | $50.84 |
| Mid-grade | $4.23 | $27.63 | $55.26 |
| Premium | $4.55 | $29.70 | $59.41 |
| Diesel | $5.41 | $35.34 | $70.68 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in Wyoming · Apr 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.