How far is Newcastle, WY from Rock Springs, WY?
The driving distance from Newcastle, WY to Rock Springs, WY is about 387.4 miles (623.5 km), with a travel time of about 06h 47m by car.
- The straight-line flight distance is about 298.1 miles (479.7 km).
- For a round trip, plan for roughly 13h 35m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 7:30 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 06h 47m.
Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
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 in Uinta County, Wyoming, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Showers And Thunderstorms
Slight Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Newcastle and Rock Springs.
Turn-by-Turn Driving Directions
Step-by-step road directions between Newcastle and Rock Springs.
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1
Start on West Main Street
2.1 mi · 3 min · West Main Street
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2
Continue on US Highway 16
1.2 km · 1 min · US Highway 16
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3
Turn left onto Highway 450
45.6 mi · 1 hr 8 min · Highway 450
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4
Continue on Clareton Highway
20.6 mi · 31 min · Clareton Highway
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5
Turn right onto State Highway 59 South
2.7 mi · 3 min · State Highway 59 South
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6
Turn left
51.3 mi · 59 min
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7
Turn left
18.1 mi · 21 min
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8
Take the exit left toward I 25 South: Casper
2173 ft · 53 sec
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9
Merge slight left
20.1 mi · 19 min
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10
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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11
Keep slight left
577 ft · 17 sec
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12
Turn right
2.7 mi · 3 min
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13
Continue on Casper West Belt
7.3 mi · 9 min · Casper West Belt
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14
Turn right onto County Road 308
63.7 mi · 1 hr 12 min · County Road 308
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15
Continue straight
44.1 mi · 51 min
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16
Turn right onto West Spruce Street
1.5 mi · 2 min · West Spruce Street
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17
Take the ramp right
1 km · 1 min
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18
Merge slight left onto Dwight D. Eisenhower Highway
103.6 mi · 1 hr 40 min · Dwight D. Eisenhower Highway
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19
Take the exit slight right toward I 80 Business West, US 30 Business West
2755 ft · 48 sec
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20
Turn left onto 9th Street
2579 ft · 51 sec · 9th Street
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21
Turn left onto South Side Belt Route
2032 ft · 41 sec · South Side Belt Route
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22
Turn slight right
70 m · 10 sec
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23
Turn straight onto James Drive
813 ft · 25 sec · James Drive
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24
Turn left onto Virginia Street
905 ft · 47 sec · Virginia Street
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25
Turn left onto Edgar Street
789 ft · 22 sec · Edgar Street
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26
At the end of the road, turn right onto Agate Street
129 m · 24 sec · Agate Street
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27
Turn left onto Collins Street
26 m · 4 sec · Collins Street
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28
Arrive at your destination
0 m · 1 sec · Collins Street
Car Route Details
A richer read on the saved driving route between Newcastle and Rock Springs.
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 40m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
Better with a longer stop
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
Chance Showers And Thunderstorms leaving Newcastle and Slight Chance Showers And Thunderstorms near Rock Springs.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Newcastle to Rock Springs?
The road trip is about 387.4 miles (623.5 km) and usually takes 06h 47m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
What is the halfway point on this route?
Mountain View is a useful midpoint, sitting about 193.6 miles from Newcastle and 193.9 miles from Rock Springs.
How much longer is the road route than the straight-line distance?
The direct path is about 298.1 miles (479.7 km), while the road route adds roughly 89.3 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 7:30 AM MDT. Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $53.22 one way or $106.43 round trip. Estimated CO2 is about 121.5 kg one way.
What should you check before leaving?
Before you leave, expect Chance Showers And Thunderstorms around Newcastle and Slight Chance Showers And Thunderstorms near Rock Springs.
Stop Ideas Near Mountain View
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 Mountain View.
Casper, Wyoming
Douglas, Wyoming
Flight Path Map
This map shows the direct air route between Newcastle and Rock Springs. Straight-line distance: 298.08 mi (479.72 km).
#1 Newcastle
City in Weston County, Wyoming, United States
| Population | 3,314 |
| Coordinates | 43.8547000, -104.2049400 |
| Altitude | 1319 |
| 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: 623 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 12h 54m |
| 40 mph (64.37 km/h) | 09h 41m |
| 50 mph (80.47 km/h) | 07h 44m |
| 60 mph (96.56 km/h) | 06h 27m |
| 70 mph (112.65 km/h) | 05h 32m |
| 80 mph (129 km/h) | 04h 49m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $53.22 | $106.43 |
| Mid-grade | $4.23 | $57.84 | $115.68 |
| Premium | $4.55 | $62.18 | $124.37 |
| Diesel | $5.41 | $73.98 | $147.96 |
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 · Jun 01, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.