How far is Rock Springs, WY from Lusk, WY?
The driving distance from Rock Springs, WY to Lusk, WY is about 331.1 miles (532.8 km), with a travel time of about 05h 57m by car.
- The straight-line flight distance is about 256.4 miles (412.6 km).
- For a round trip, plan for roughly 11h 55m 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 57m.
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.
Sunny
Driving Route Map
The map below follows the saved road route between Rock Springs and Lusk.
Turn-by-Turn Driving Directions
Step-by-step road directions between Rock Springs and Lusk.
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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
2.7 mi · 3 min
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16
Take the exit right
62.8 mi · 1 hr 6 min
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17
Take the exit slight right toward US 18 East, US 20 East: Lusk
1532 ft · 41 sec
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18
Turn left onto US Highway 18/20
18.4 mi · 20 min · US Highway 18/20
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19
Continue on US Highway 20
23.3 mi · 25 min · US Highway 20
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20
Continue on West 8th Street
882 ft · 32 sec · West 8th Street
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21
Turn left onto South Main Street
2604 ft · 1 min · South Main Street
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22
Arrive at your destination
0 m · 1 sec · South Main Street
Car Route Details
A richer read on the saved driving route between Rock Springs and Lusk.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
Dwight D. Eisenhower Highway
Merge slight left onto Dwight D. Eisenhower Highway
104 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.
Sunny leaving Rock Springs and Sunny near Lusk.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Rock Springs to Lusk?
The road trip is about 331.1 miles (532.8 km) and usually takes 05h 57m 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 165.2 miles from Rock Springs and 165.8 miles from Lusk.
How much longer is the road route than the straight-line distance?
The direct path is about 256.4 miles (412.6 km), while the road route adds roughly 74.7 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 6:00 AM to 8:00 AM MDT. If you want a more comfortable same-day return, try to leave by 5:04 AM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $45.47 one way or $90.94 round trip. Estimated CO2 is about 103.8 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Rock Springs and Sunny near Lusk.
Flight Path Map
This map shows the direct air route between Rock Springs and Lusk. Straight-line distance: 256.41 mi (412.65 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 Lusk
Town in Wyoming
| Population | 1,474 |
| Coordinates | 42.7624700, -104.4521700 |
| Altitude | 1530 |
| Country | United States |
End: Lusk (-104.45217, 42.76247)
Estimated Travel Time
Distance: 533 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 11h 01m |
| 40 mph (64.37 km/h) | 08h 16m |
| 50 mph (80.47 km/h) | 06h 37m |
| 60 mph (96.56 km/h) | 05h 31m |
| 70 mph (112.65 km/h) | 04h 43m |
| 80 mph (129 km/h) | 04h 07m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $45.47 | $90.94 |
| Mid-grade | $4.23 | $49.42 | $98.84 |
| Premium | $4.55 | $53.13 | $106.26 |
| Diesel | $5.41 | $63.21 | $126.42 |
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 · May 13, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.