How far is Gillette, WY from Riverton, WY?
The driving distance from Gillette, WY to Riverton, WY is about 247.2 miles (397.8 km), with a travel time of about 04h 28m by car.
- The straight-line flight distance is about 168.3 miles (270.9 km).
- For a round trip, plan for roughly 08h 56m 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 04h 28m.
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 of the United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Snow Showers then Partly Sunny
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Gillette and Riverton.
Turn-by-Turn Driving Directions
Step-by-step road directions between Gillette and Riverton.
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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
20.1 mi · 19 min
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8
Take the exit slight right toward US 20 West, US 26 West, WY 220 West: Shoshoni, Port of Entry
1757 ft · 43 sec
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9
Keep slight left
577 ft · 17 sec
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10
Turn right
2.7 mi · 3 min
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11
Turn right onto West Yellowstone Highway
94.3 mi · 1 hr 47 min · West Yellowstone Highway
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12
Continue straight
17.7 mi · 20 min
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13
Continue straight
3.9 mi · 5 min
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14
Arrive at your destination
0 m · 1 sec · North Federal Boulevard
Car Route Details
A richer read on the saved driving route between Gillette and Riverton.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
West Yellowstone Highway
Turn right onto West Yellowstone Highway
94.3 mi · 01h 47m
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.
Chance Snow Showers then Partly Sunny leaving Gillette and Mostly Sunny near Riverton.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Gillette to Riverton?
The road trip is about 247.2 miles (397.8 km) and usually takes 04h 28m 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?
Bar Nunn is a useful midpoint, sitting about 123.5 miles from Gillette and 123.7 miles from Riverton.
How much longer is the road route than the straight-line distance?
The direct path is about 168.3 miles (270.9 km), while the road route adds roughly 78.9 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 8:04 AM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $33.95 one way or $67.89 round trip. Estimated CO2 is about 77.5 kg one way.
What should you check before leaving?
Before you leave, expect Chance Snow Showers then Partly Sunny around Gillette and Mostly Sunny near Riverton.
Stop Ideas Near Bar Nunn
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 Bar Nunn.
Casper, Wyoming
Douglas, Wyoming
Flight Path Map
This map shows the direct air route between Gillette and Riverton. Straight-line distance: 168.35 mi (270.94 km).
#1 Gillette
City in Campbell County, Wyoming, United States
| Population | 32,220 |
| Coordinates | 44.2910900, -105.5022200 |
| Altitude | 1388 |
| Country | United States |
#2 Riverton
City in Freemont County, Wyoming
| Population | 10,819 |
| Coordinates | 43.0249600, -108.3801000 |
| Altitude | 1509 |
| Country | United States |
End: North Federal Boulevard (-108.380624, 43.024965)
Estimated Travel Time
Distance: 398 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 08h 14m |
| 40 mph (64.37 km/h) | 06h 10m |
| 50 mph (80.47 km/h) | 04h 56m |
| 60 mph (96.56 km/h) | 04h 07m |
| 70 mph (112.65 km/h) | 03h 31m |
| 80 mph (129 km/h) | 03h 05m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $33.95 | $67.89 |
| Mid-grade | $4.23 | $36.89 | $73.79 |
| Premium | $4.55 | $39.67 | $79.33 |
| Diesel | $5.41 | $47.19 | $94.39 |
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.