How far is Rock Springs, WY from Buffalo, WY?
The driving distance from Rock Springs, WY to Buffalo, WY is about 336 miles (540.8 km), with a travel time of about 05h 49m by car.
- The straight-line flight distance is about 228.9 miles (368.4 km).
- For a round trip, plan for roughly 11h 38m 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 49m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
This departure sits inside the recommended comfort window for the route.
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.
Slight Chance T-storms
Slight Chance T-storms
Driving Route Map
The map below follows the saved road route between Rock Springs and Buffalo.
Turn-by-Turn Driving Directions
Step-by-step road directions between Rock Springs and Buffalo.
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1
Start on Collins Street
26 m · 7 sec · Collins Street
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2
Turn right onto Agate Street
129 m · 19 sec · Agate Street
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3
At the end of the road, turn left onto Edgar Street
789 ft · 26 sec · Edgar Street
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4
Turn right onto Virginia Street
905 ft · 40 sec · Virginia Street
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5
At the end of the road, turn right onto James Drive
977 ft · 33 sec · James Drive
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6
At the end of the road, turn left onto South Side Belt Route
2190 ft · 48 sec · South Side Belt Route
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7
Turn right onto 9th Street
2182 ft · 38 sec · 9th Street
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8
Take the ramp right
1916 ft · 30 sec
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9
Merge slight left onto Dwight D. Eisenhower Highway
103.9 mi · 1 hr 41 min · Dwight D. Eisenhower Highway
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10
Take the exit slight right toward I 80 Business East, WY 789 North: Rawlins
1997 ft · 52 sec
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11
Turn left onto West Spruce Street
1.7 mi · 3 min · West Spruce Street
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12
Turn left onto 3rd Street
44.1 mi · 51 min · 3rd Street
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13
Continue straight
63.7 mi · 1 hr 13 min
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14
Turn left onto Casper West Belt
7.3 mi · 9 min · Casper West Belt
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15
Continue straight
3 mi · 4 min
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16
Turn left onto I 25 North, US 87 North: Midwest
1989 ft · 51 sec
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17
Merge slight left
108.2 mi · 1 hr 42 min
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18
Take the exit slight right toward I 25 Business, US 87 Business: Buffalo
1884 ft · 51 sec
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19
Turn left onto South Main Street
1.3 mi · 2 min · South Main Street
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20
Arrive at your destination
0 m · 1 sec · North Main Street
Car Route Details
A richer read on the saved driving route between Rock Springs and Buffalo.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
I 25 North
Merge slight left
108 mi · 01h 42m
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.
Slight Chance T-storms leaving Rock Springs and Slight Chance T-storms near Buffalo.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Rock Springs to Buffalo?
The road trip is about 336 miles (540.8 km) and usually takes 05h 49m 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 167.9 miles from Rock Springs and 168.1 miles from Buffalo.
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 107.1 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 6:00 AM to 8:00 AM MDT. If you want a more comfortable same-day return, try to leave by 5:22 AM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $46.17 one way or $92.34 round trip. Estimated CO2 is about 105.4 kg one way.
What should you check before leaving?
Before you leave, expect Slight Chance T-storms around Rock Springs and Slight Chance T-storms near Buffalo.
Flight Path Map
This map shows the direct air route between Rock Springs and Buffalo. Straight-line distance: 228.91 mi (368.4 km).
#1 Rock Springs
City in Sweetwater County, Wyoming, United States
| Population | 22,943 |
| Coordinates | 41.5874600, -109.2029000 |
| Altitude | 1947 |
| Country | United States |
#2 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 |
End: Buffalo (-106.69894, 44.34831)
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 24m |
| 50 mph (80.47 km/h) | 06h 43m |
| 60 mph (96.56 km/h) | 05h 36m |
| 70 mph (112.65 km/h) | 04h 48m |
| 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 | $46.17 | $92.34 |
| Mid-grade | $4.23 | $50.18 | $100.36 |
| Premium | $4.55 | $53.95 | $107.90 |
| Diesel | $5.41 | $64.19 | $128.37 |
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 16, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.