How far is Buffalo, WY from Rock Springs, WY?
The driving distance from Buffalo, WY to Rock Springs, WY is about 335.9 miles (540.5 km), with a travel time of about 05h 33m by car.
- The straight-line flight distance is about 228.9 miles (368.4 km).
- For a round trip, plan for roughly 11h 06m 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 05h 33m.
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.
Mostly Sunny then Slight Chance Rain Showers
Mostly Sunny then Slight Chance T-storms
Driving Route Map
The map below follows the saved road route between Buffalo and Rock Springs.
Turn-by-Turn Driving Directions
Step-by-step road directions between Buffalo and Rock Springs.
-
1
Start on North Main Street
1.2 mi · 2 min · North Main Street
-
2
Take the ramp right toward I 25 South, US 87 South: Casper
2736 ft · 1 min
-
3
Merge slight left
108.1 mi · 1 hr 41 min
-
4
Take the exit slight right toward US 20 West, US 26 West, WY 220 West: Shoshoni, Port of Entry
1757 ft · 43 sec
-
5
Keep slight left
577 ft · 17 sec
-
6
Turn right
2.7 mi · 3 min
-
7
Continue on Casper West Belt
7.3 mi · 9 min · Casper West Belt
-
8
Turn right onto County Road 308
63.7 mi · 1 hr 12 min · County Road 308
-
9
Continue straight
44.1 mi · 51 min
-
10
Turn right onto West Spruce Street
1.5 mi · 2 min · West Spruce Street
-
11
Take the ramp right
1 km · 1 min
-
12
Merge slight left onto Dwight D. Eisenhower Highway
103.6 mi · 1 hr 40 min · Dwight D. Eisenhower Highway
-
13
Take the exit slight right toward I 80 Business West, US 30 Business West
2755 ft · 48 sec
-
14
Turn left onto 9th Street
2579 ft · 51 sec · 9th Street
-
15
Turn left onto South Side Belt Route
2032 ft · 41 sec · South Side Belt Route
-
16
Turn slight right
70 m · 10 sec
-
17
Turn straight onto James Drive
813 ft · 25 sec · James Drive
-
18
Turn left onto Virginia Street
905 ft · 47 sec · Virginia Street
-
19
Turn left onto Edgar Street
789 ft · 22 sec · Edgar Street
-
20
At the end of the road, turn right onto Agate Street
129 m · 24 sec · Agate Street
-
21
Turn left onto Collins Street
26 m · 4 sec · Collins Street
-
22
Arrive at your destination
0 m · 1 sec · Collins Street
Car Route Details
A richer read on the saved driving route between Buffalo and Rock Springs.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
I 25 South
Merge slight left
108 mi · 01h 41m
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 Rain Showers leaving Buffalo and Mostly Sunny then Slight Chance T-storms near Rock Springs.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Buffalo to Rock Springs?
The road trip is about 335.9 miles (540.5 km) and usually takes 05h 33m 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?
Bairoil is a useful midpoint, sitting about 167.8 miles from Buffalo and 168.1 miles from Rock Springs.
How much longer is the road route than the straight-line distance?
The direct path is about 228.9 miles (368.4 km), while the road route adds roughly 107 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 5:54 AM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $46.13 one way or $92.26 round trip. Estimated CO2 is about 105.3 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny then Slight Chance Rain Showers around Buffalo and Mostly Sunny then Slight Chance T-storms near Rock Springs.
Flight Path Map
This map shows the direct air route between Buffalo and Rock Springs. Straight-line distance: 228.91 mi (368.4 km).
#1 Buffalo
City in and county seat of Johnson County, Wyoming, United States
| Population | 4,659 |
| Coordinates | 44.3483100, -106.6989400 |
| Altitude | 1416 |
| Country | United States |
#2 Rock Springs
City in Sweetwater County, Wyoming, United States
| Population | 22,943 |
| Coordinates | 41.5874600, -109.2029000 |
| Altitude | 1947 |
| Country | United States |
End: Collins Street (-109.202964, 41.587676)
Estimated Travel Time
Distance: 541 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 11h 11m |
| 40 mph (64.37 km/h) | 08h 23m |
| 50 mph (80.47 km/h) | 06h 43m |
| 60 mph (96.56 km/h) | 05h 35m |
| 70 mph (112.65 km/h) | 04h 47m |
| 80 mph (129 km/h) | 04h 11m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $46.13 | $92.26 |
| Mid-grade | $4.23 | $50.14 | $100.27 |
| Premium | $4.55 | $53.91 | $107.81 |
| Diesel | $5.41 | $64.13 | $128.26 |
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.