How far is Gillette, WY from Newcastle, WY?
The driving distance from Gillette, WY to Newcastle, WY is about 77.1 miles (124.1 km), with a travel time of about 01h 42m by car.
- The straight-line flight distance is about 71.1 miles (114.4 km).
- For a round trip, plan for roughly 03h 25m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM MDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
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 01h 42m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
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 of the United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Mostly Sunny then Slight Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Gillette and Newcastle.
Turn-by-Turn Driving Directions
Step-by-step road directions between Gillette and Newcastle.
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1
Start on East 4th Street
1.5 km · 2 min · East 4th Street
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2
At the end of the road, turn left onto Stanley Avenue
63 m · 12 sec · Stanley Avenue
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3
Turn right
1.4 km · 2 min
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4
Take the ramp slight right
100 m · 9 sec
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5
Continue straight
27 mi · 26 min
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6
Take the exit slight right
801 ft · 24 sec
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7
Turn right onto I-90 Access Road
1014 ft · 22 sec · I-90 Access Road
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8
At the end of the road, turn left onto East Converse Street
1802 ft · 31 sec · East Converse Street
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9
Continue on US Highway 16
45.4 mi · 1 hr 7 min · US Highway 16
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10
Continue on West Main Street
2.1 mi · 3 min · West Main Street
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11
Arrive at your destination
0 m · 1 sec · West Main Street
Car Route Details
A richer read on the saved driving route between Gillette and Newcastle.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
US Highway 16
Continue on US Highway 16
45.4 mi · 01h 07m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Mostly Sunny leaving Gillette and Mostly Sunny then Slight Chance Showers And Thunderstorms near Newcastle.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Gillette to Newcastle?
The road trip is about 77.1 miles (124.1 km) and usually takes 01h 42m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Moorcroft is a useful midpoint, sitting about 38.5 miles from Gillette and 38.6 miles from Newcastle.
How much longer is the road route than the straight-line distance?
The direct path is about 71.1 miles (114.4 km), while the road route adds roughly 6 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 8:00 AM to 10:00 AM MDT. If you want a more comfortable same-day return, try to leave by 3:04 PM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $10.59 one way or $21.18 round trip. Estimated CO2 is about 24.2 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Gillette and Mostly Sunny then Slight Chance Showers And Thunderstorms near Newcastle.
Flight Path Map
This map shows the direct air route between Gillette and Newcastle. Straight-line distance: 71.1 mi (114.43 km).
#1 Gillette
City in Campbell County, Wyoming, United States
| Population | 32,220 |
| Coordinates | 44.2910900, -105.5022200 |
| Altitude | 1388 |
| Country | United States |
#2 Newcastle
City in Weston County, Wyoming, United States
| Population | 3,314 |
| Coordinates | 43.8547000, -104.2049400 |
| Altitude | 1319 |
| Country | United States |
End: Newcastle (-104.20494, 43.8547)
Estimated Travel Time
Distance: 124 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 34m |
| 40 mph (64.37 km/h) | 01h 55m |
| 50 mph (80.47 km/h) | 01h 32m |
| 60 mph (96.56 km/h) | 01h 17m |
| 70 mph (112.65 km/h) | 01h 06m |
| 80 mph (129 km/h) | 00h 57m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $10.59 | $21.18 |
| Mid-grade | $4.23 | $11.51 | $23.02 |
| Premium | $4.55 | $12.37 | $24.75 |
| Diesel | $5.41 | $14.72 | $29.44 |
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.