How far is Mills, WY from Riverton, WY?
The driving distance from Mills, WY to Riverton, WY is about 118.4 miles (190.5 km), with a travel time of about 02h 09m by car.
- The straight-line flight distance is about 102.7 miles (165.3 km).
- For a round trip, plan for roughly 04h 18m 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 09m.
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.
Rain And Snow Showers Likely
Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Mills and Riverton.
Turn-by-Turn Driving Directions
Step-by-step road directions between Mills and Riverton.
-
1
Start on 1st Street
956 ft · 27 sec · 1st Street
-
2
At the end of the road, turn right onto Southwest Wyoming Boulevard
1.4 km · 1 min · Southwest Wyoming Boulevard
-
3
Turn left onto West Yellowstone Highway
7.8 mi · 10 min · West Yellowstone Highway
-
4
Continue straight
88.1 mi · 1 hr 40 min
-
5
Continue straight
17.7 mi · 20 min
-
6
Continue straight
3.9 mi · 5 min
-
7
Arrive at your destination
0 m · 1 sec · North Federal Boulevard
Car Route Details
A richer read on the saved driving route between Mills 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
Continue straight
88.1 mi · 01h 40m
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.
Rain And Snow Showers Likely leaving Mills and Chance Rain Showers near Riverton.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Mills to Riverton?
The road trip is about 118.4 miles (190.5 km) and usually takes 02h 09m 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?
Shoshoni is a useful midpoint, sitting about 59.1 miles from Mills and 59.2 miles from Riverton.
How much longer is the road route than the straight-line distance?
The direct path is about 102.7 miles (165.3 km), while the road route adds roughly 15.7 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 2:12 PM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $16.27 one way or $32.55 round trip. Estimated CO2 is about 37.1 kg one way.
What should you check before leaving?
Before you leave, expect Rain And Snow Showers Likely around Mills and Chance Rain Showers near Riverton.
Flight Path Map
This map shows the direct air route between Mills and Riverton. Straight-line distance: 102.69 mi (165.26 km).
#1 Mills
Town in Wyoming, United States
| Population | 4,077 |
| Coordinates | 42.8405200, -106.3658600 |
| Altitude | 1562 |
| 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: 190 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 03h 56m |
| 40 mph (64.37 km/h) | 02h 57m |
| 50 mph (80.47 km/h) | 02h 22m |
| 60 mph (96.56 km/h) | 01h 58m |
| 70 mph (112.65 km/h) | 01h 41m |
| 80 mph (129 km/h) | 01h 28m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $16.27 | $32.55 |
| Mid-grade | $4.23 | $17.69 | $35.37 |
| Premium | $4.55 | $19.01 | $38.03 |
| Diesel | $5.41 | $22.62 | $45.24 |
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.