Rock Springs, WY to Afton, WY is 180.7 miles and takes about 3h 22m via US 30 and US 89, with a fuel budget near $29 and enough daylight to finish in a day. This trip stays within the Mountain West region, offering a straightforward drive across Wyoming. With a recommended single day of travel, it's an easy connection between two points. The route is primarily highway, making it efficient for those looking to cover ground quickly. You'll find it a practical option for getting from one side of the state to the other.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Break Rhythm
1 planned break
A short stop every 2 to 3 hours is enough for this drive.
Midpoint
90.3 miles from Rock Springs, WY
A natural place for your longest stop of the day
, about 1h 39m into the drive
.
Main Roads
Road
Distance
Duration
US 30
98.8 mi
1h 49m
Dwight D. Eisenhower Highway
35.2 mi
34m
US 89
32.2 mi
38m
WY 89
9.5 mi
10m
Dewar Drive
1.3 mi
2m
ID 61
0.8 mi
<1m
Blair Avenue
0.8 mi
1m
Edgar Street
0.6 mi
1m
Longest stretch:
US 30
— 98.8 mi, about 1h 49m
Turn-by-Turn Driving Directions
Step-by-step road directions between Rock Springs, WY and Afton, WY.
1
Start on Collins Street
84 ft·7 sec·Collins Street
2
Turn right onto Agate Street
422 ft·18 sec·Agate Street
3
At end of road, turn left onto Edgar Street
0.6 mi·1 min·Edgar Street
4
At end of road, turn left onto 2nd Street
0.5 mi·1 min·2nd Street
5
Turn left onto A Street
429 ft·10 sec·A Street
6
Turn right onto Blair Avenue
0.8 mi·1 min·Blair Avenue
7
Turn right onto WY 376
0.4 mi·46 sec·South Side Belt Route
8
At end of road, turn left onto I 80 Business; US 30 Business
1.3 mi·2 min·Dewar Drive
9
Take the ramp
0.4 mi·53 sec
10
Merge onto I 80; US 30; US 191
35 mi·34 min·Dwight D. Eisenhower Highway
11
Take the exit onto US 30
99 mi·1 hr 49 min·US 30
Toward US 30 West: Kemmerer, Pocatello
12
Turn right onto WY 89
9.5 mi·10 min·WY 89
13
Continue on ID 61
0.8 mi·59 sec·ID 61
14
Turn right onto US 89
32 mi·38 min·US 89
15
Turn right onto East 4th Avenue
442 ft·21 sec·East 4th Avenue
16
Turn right
108 ft·7 sec
17
Arrive at destination
Trip Plan
Given this is a 1-day trip covering 180.7 miles, leaving anytime in the morning should get you to Afton with plenty of daylight. The fuel cost is estimated at $29, so ensure you have enough for the full drive. There's only one recommended stop, suggesting the route is quite direct. Pay attention to the transition off US 30 after nearly 100 miles, as road conditions or speed limits might change. Filling up in Rock Springs before you depart is a good idea, as services can be spread out on this route.
Morning Departure
An early start around 7-8 AM gets you there with plenty of daylight left.
Evening Departure
A late afternoon start means arriving after dark. Morning is better.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 90.3 miles from Rock Springs, WY, or about 1h 39m into the drive.
The longest continuous stretch on this route runs about 98.8 miles.
This is a comfortable same-day trip.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 40 miles or 44m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 90.3 miles or 1h 39m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 2h 43m
Traffic, exits, and arrival timing usually matter more near Afton, WY than in the middle of the route.
Before You Leave
+
Open the route before leaving Rock Springs, WY so your first major turns are already loaded.
+
Leave with enough water and a charging cable within reach, not packed away.
+
Check your fuel range against the first long segment, especially if you are starting outside city service areas.
Day 1
Settle into the route from Rock Springs, WY
This is one driving day of about 180.7 miles and 3h 22m.
Your first comfortable stop window is around 40 miles from Rock Springs, WY.
This route can stay practical as a one-day drive if traffic stays reasonable.
Plan about 1 real break rather than only quick fuel stops.
The longest stretch is on US 30 for about 98.8 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Place data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
5 of 14
5 decision points cluster between mile 0 and 180.7 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
5
0 mi into trip|~0m in|Agate Street
Turn right onto Agate Street
Navigation decision point
4
0.1 mi into trip|~0m in|Edgar Street
At end of road, turn left onto Edgar Street
Navigation decision point
5
0.7 mi into trip|~1m in|2nd Street
At end of road, turn left onto 2nd Street
Navigation decision point
5
39.4 mi into trip|~43m in|US 30
Take the exit onto US 30 toward US 30 West: Kemmerer, Pocatello
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Toward US 30 West: Kemmerer, Pocatello
5
180.7 mi into trip|~3h 22m in
Turn right
Navigation decision point
Fuel & Cost
Regular Gas
$28.63 one way
$57.27 round trip
$4.03/gal25.4 MPG avg63 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.22
$30.01
$60.03
premium
$4.53
$32.23
$64.47
diesel
$5.61
$39.90
$79.79
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$29
Meals
$25–$50
Total
$54–$79
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 63.2 kg one way.
Prices: EIA weekly data, 2026-04-13.
Station data from NREL Alternative Fuel Stations database.
Driving Electric?
About $19 in charging
· 0 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
54.2
0
$18.97
$8.67
Efficient EV
45.2
0
$15.81
$7.23
EV Truck/SUV
72.3
0
$25.30
$11.56
Gas CO2
63 kg
EV CO2
21 kg (67% less)
This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.
DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.
Travel Intel
Current conditions at both ends of the drive.
Forecast as of Apr 15, 2026
Origin
Rock Springs, WY
Late night
in Rock Springs on Sunday
Local time
1:36 AM
MDT
Current temp
63°F
Unavailable
Live forecast
Destination
Afton, WY
Late night
in Afton on Sunday
Local time
1:36 AM
MDT
Current temp
58°F
Unavailable
Live forecast
Seasonal Notes
Summer travel usually means heavier construction, hotter rest stops, and busier weekend traffic around major cities.
Winter travel shortens daylight, so a route that looks manageable on paper can feel much longer after dark.
Holiday weekends tend to make both departure and arrival windows slower than the raw route time suggests.
Time zone
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
5 degrees cooler at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
3h 22m on the road
Use the two city cards together: check the sky where you start, then compare it with the local time and temperature at arrival.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
National Parks Near This Route
Worth a detour if your schedule allows.
Fossil Butte National Monument
National Monument
In the ridges of southwest Wyoming are some of the best-preserved fossils in the world. They tell the story of ancient life in a warm, wet environment in and around a freshwater lake. Stingrays swam i...
4 mi from route
~10 min detour
Free
near mile 99.7
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This drive is mostly highway, with 78% of the 180.7 miles on routes like US 30 and US 89. You'll experience a long stretch of 98.8 miles on US 30 before transitioning to other roads. Expect a rural cruising feel for much of the trip, with fewer exits and open roads. The highway portion means you'll likely encounter moderate speeds and consistent driving conditions for the majority of the 3h 22m duration.
78% highway — fuel and pacing are the main things to plan.
17 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 98.8 mi on US 30.
How Hard Is This Drive?
2/10
This is a straightforward highway drive that stays mostly on US 30 and Dwight D. Eisenhower Highway. Navigation is very simple - set it and forget it for most of the drive. The trickiest moment comes early in the drive near Agate Street.
Driving Effort2/10
Very easy - short and simple to drive
Balances navigation complexity with total wheel time.
The drive from Rock Springs, WY to Afton, WY is easy. At 3h 22m with 78% highway, most drivers will find it relaxed and low-stress.
Where does it get tricky?
The main spots that need attention: near the start (Agate Street): Navigation decision point; at 0.1 miles (Edgar Street): Navigation decision point; at 0.7 miles (2nd Street): Navigation decision point.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
On the drive from Rock Springs, WY to Afton, WY, road signs begin pointing toward Pocatello along the way.
Rock Springs is the biggest city in Sweetwater County in Southwest Wyoming. It had a population of 23,000 in 2019. Rock Springs' nickname is: "Home of 56 Nationalities". The town has a rich western and coal mining history.
The longest stretch is about 98.8 miles on US 30. The full list of main roads is in the Roads section above.
We did not find dedicated rest areas on this route. For a drive this long, plan bathroom and stretch breaks around gas stations, fast-food stops, or small-town downtowns — check the Nearby Places section for options.
Yes, with realistic expectations. Build in a stop roughly every 2 hours, have snacks and activities ready, and check the Nearby Places tabs for kid-friendly stops along the way.
Mostly yes along the main roads, but rural stretches through WY can have sparse or no coverage. Before you leave, download offline Google Maps or Apple Maps for the route, and consider downloading music or podcasts instead of streaming. If you depend on data for navigation, keep a paper backup of the turn-by-turn directions.
The main spots that need attention: near the start (Agate Street): Navigation decision point; at 0.1 miles (Edgar Street): Navigation decision point; at 0.7 miles (2nd Street): Navigation decision point.
Possible but tiring. At 3.4 hours each way, an in-and-out day trip would put you behind the wheel for 6.8 hours — manageable with a long break at Afton, WY, but most travelers stay overnight.
