How far is Gillette, WY from Casper, WY?
The driving distance from Gillette, WY to Casper, WY is about 131.5 miles (211.7 km), with a travel time of about 02h 29m by car.
- The straight-line flight distance is about 106.4 miles (171.3 km).
- For a round trip, plan for roughly 04h 59m 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 02h 29m.
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 in Natrona County, Wyoming, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Snow Showers then Partly Sunny
Scattered Snow Showers
Driving Route Map
The map below follows the saved road route between Gillette and Casper.
Turn-by-Turn Driving Directions
Step-by-step road directions between Gillette and Casper.
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1
Start on East 4th Street
2116 ft · 1 min · East 4th Street
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2
Turn right onto South Douglas Highway
5 mi · 10 min · South Douglas Highway
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3
Continue on State Highway 59 South
32.8 mi · 36 min · State Highway 59 South
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4
Turn right
51.3 mi · 59 min
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5
Turn left
18.1 mi · 21 min
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6
Take the exit left toward I 25 South: Casper
2173 ft · 53 sec
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7
Merge slight left
20.9 mi · 20 min
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8
Continue straight
2 mi · 3 min
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9
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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10
At the end of the road, turn left onto Bryan Stock Trail
1.1 mi · 2 min · Bryan Stock Trail
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11
Turn left onto East Sunlight Drive
1.5 km · 4 min · East Sunlight Drive
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12
Arrive at your destination
0 m · 1 sec · North Sunlight Drive
Car Route Details
A richer read on the saved driving route between Gillette 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 right
51.3 mi · 00h 59m
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.
Chance Snow Showers then Partly Sunny leaving Gillette and Scattered Snow Showers near Casper.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Gillette to Casper?
The road trip is about 131.5 miles (211.7 km) and usually takes 02h 29m 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?
Edgerton is a useful midpoint, sitting about 66.6 miles from Gillette and 64.9 miles from Casper.
How much longer is the road route than the straight-line distance?
The direct path is about 106.4 miles (171.3 km), while the road route adds roughly 25.1 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 1:30 PM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $18.06 one way or $36.13 round trip. Estimated CO2 is about 41.2 kg one way.
What should you check before leaving?
Before you leave, expect Chance Snow Showers then Partly Sunny around Gillette and Scattered Snow Showers near Casper.
Stop Ideas Near Edgerton
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 Edgerton.
Casper, Wyoming
Douglas, Wyoming
Flight Path Map
This map shows the direct air route between Gillette and Casper. Straight-line distance: 106.46 mi (171.33 km).
#1 Gillette
City in Campbell County, Wyoming, United States
| Population | 32,220 |
| Coordinates | 44.2910900, -105.5022200 |
| Altitude | 1388 |
| 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: 212 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 04h 22m |
| 40 mph (64.37 km/h) | 03h 17m |
| 50 mph (80.47 km/h) | 02h 37m |
| 60 mph (96.56 km/h) | 02h 11m |
| 70 mph (112.65 km/h) | 01h 52m |
| 80 mph (129 km/h) | 01h 38m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $18.06 | $36.13 |
| Mid-grade | $4.23 | $19.63 | $39.26 |
| Premium | $4.55 | $21.11 | $42.21 |
| Diesel | $5.41 | $25.11 | $50.22 |
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 25, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.