Sleepy Hollow, WY to Rock Springs, WY is 351.3 miles and takes about 6h 28m via Dwight D. Eisenhower Highway and County Road 308, with a fuel budget near $54 and enough daylight to finish in a day. This trip stays within Wyoming, crossing the Mountain West region. You'll primarily be on the Dwight D. Eisenhower Highway, so expect a good amount of interstate driving. With a recommended one-day duration, this route is ideal if you're looking for a straightforward transit between these two points. Consider this a practical option for getting from A to B efficiently.
Trip Pace
Same-day drive is realistic
A same-day return is possible, but it will make for a full day on the road.
Break Rhythm
1 planned break
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
175.6 miles from Sleepy Hollow, WY
A natural place for your longest stop of the day
, about 3h 21m into the drive
.
Main Roads
Road
Distance
Duration
Dwight D. Eisenhower Highway
103.6 mi
1h 40m
County Road 308
63.7 mi
1h 12m
WY 387
51.3 mi
58m
US 287
44.1 mi
50m
State Highway 59 South
32.8 mi
35m
I 25
20.1 mi
18m
WY 259
18.1 mi
20m
Casper West Belt
7.3 mi
8m
Longest stretch:
Dwight D. Eisenhower Highway
— 103.6 mi, about 1h 40m
Traffic on I-80
Hour-of-day weekday pattern from 16 FHWA count stations on your route.
Peak
2 PM
~453 veh/hr typical
· worst 725
Quietest
2 AM
~88 veh/hr
Peak-to-quiet ratio
5.1×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 69 weeks of 2023 FHWA Travel Monitoring Analysis System data. Weekday hours only (Mon–Fri).
Turn-by-Turn Driving Directions
Step-by-step road directions between Sleepy Hollow, WY and Rock Springs, WY.
1
Start on this road
0.2 mi·58 sec·this road
2
Turn left onto Katrina Avenue
0.3 mi·1 min·Katrina Avenue
3
Turn right onto Tarry Street
0.1 mi·38 sec·Tarry Street
4
Turn left onto Irving Boulevard
0.2 mi·44 sec·Irving Boulevard
5
At end of road, turn right onto Sleepy Hollow Boulevard
0.2 mi·46 sec·Sleepy Hollow Boulevard
6
Turn left onto Mather Avenue
0.2 mi·57 sec·Mather Avenue
7
At end of road, turn right onto Union Chapel Road
1.2 mi·3 min·Union Chapel Road
8
Turn left onto WY 59
33 mi·35 min·State Highway 59 South
9
Turn right onto WY 387
51 mi·58 min·WY 387
10
Turn left onto WY 259
18 mi·20 min·WY 259
11
Take the exit
0.4 mi·52 sec
Toward I 25 South: Casper
12
Merge onto I 25; US 87
20 mi·18 min·I 25; US 87
13
Take the exit
0.3 mi·42 sec
Toward US 20 West, US 26 West, WY 220 West: Shoshoni, Port of Entry
14
Keep slight left at fork
0.1 mi·17 sec
15
Turn right onto US 20; US 26
2.7 mi·3 min·US 20; US 26
16
Continue on WY 257
7.3 mi·8 min·Casper West Belt
17
Turn right onto WY 220
64 mi·1 hr 12 min·County Road 308
18
Continue on US 287; WY 789
44 mi·50 min·US 287; WY 789
19
Turn right onto I 80 Bus; US 30 Bus; WY 789
1.5 mi·2 min·West Spruce Street
20
Take the ramp onto WY 789
0.6 mi·1 min·WY 789
21
Merge onto I 80; US 30; WY 789
104 mi·1 hr 40 min·Dwight D. Eisenhower Highway
22
Take the exit
0.5 mi·48 sec
Toward I 80 Business West, US 30 Business West
23
Turn left onto I 80 Business; US 30 Business
0.5 mi·51 sec·9th Street
24
Turn left onto WY 376
0.4 mi·40 sec·South Side Belt Route
25
Turn slight right onto James Drive
230 ft·10 sec·James Drive
26
Turn straight onto James Drive
0.2 mi·24 sec·James Drive
27
Turn left onto Virginia Street
0.2 mi·46 sec·Virginia Street
28
Turn left onto Edgar Street
0.1 mi·22 sec·Edgar Street
29
At end of road, turn right onto Agate Street
422 ft·23 sec·Agate Street
30
Turn left onto Collins Street
84 ft·3 sec·Collins Street
31
Arrive at destination
Collins Street
Trip Plan
For this 6.5-hour drive, leaving in the morning will give you ample time to reach Rock Springs before evening. You'll want to plan for at least one stop, and given the 103.6-mile stretch on the Dwight D. Eisenhower Highway, it's a good idea to fuel up before that longer segment. While there's no specific need to split this drive, having flexibility means you can adjust your stop based on your comfort level. Keep an eye on your fuel gauge, especially as you move from the highway onto County Road 308 and WY 387, where services might be less frequent.
Morning Departure
Start early — leave by 6-7 AM to arrive at a reasonable hour.
Evening Departure
This is a long drive — plan for a morning departure or consider splitting it into two days.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 175.6 miles from Sleepy Hollow, WY, or about 3h 21m into the drive.
The longest continuous stretch on this route runs about 103.6 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 77 miles or 1h 31m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 175.6 miles or 3h 21m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 5h 27m
Traffic, exits, and arrival timing usually matter more near Rock Springs, WY than in the middle of the route.
Before You Leave
+
Open the route before leaving Sleepy Hollow, 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 Sleepy Hollow, WY
This is one driving day of about 351.3 miles and 6h 28m.
Your first comfortable stop window is around 77 miles from Sleepy Hollow, 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 Dwight D. Eisenhower Highway for about 103.6 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 25
5 decision points cluster between mile 0.7 and 125.3 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
5
0.7 mi into trip|~2m in|Irving Boulevard
Turn left onto Irving Boulevard
Navigation decision point
5
0.9 mi into trip|~3m in|Sleepy Hollow Boulevard
At end of road, turn right onto Sleepy Hollow Boulevard
Navigation decision point
5
1.3 mi into trip|~5m in|Union Chapel Road
At end of road, turn right onto Union Chapel Road
Navigation decision point
6
104.7 mi into trip|~2h 3m in
Take the exit toward I 25 South: Casper
Exit ramp - move to the correct lane early
Toward I 25 South: Casper
5
125.3 mi into trip|~2h 23m in
Take the exit toward US 20 West, US 26 West, WY 220 West: Shoshoni, Port of Entry
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Toward US 20 West, US 26 West, WY 220 West: Sho...
Fuel & Cost
Regular Gas
$62.22 one way
$124.45 round trip
$4.50/gal25.4 MPG avg123 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.79
$66.30
$132.61
premium
$5.10
$70.47
$140.93
diesel
$6.34
$87.70
$175.40
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$62
Meals
$25–$50
Total
$87–$112
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 122.9 kg one way.
EV Charging Along Route
6 DC fast chargers
· Coverage: good
Electric Vehicle Charging Station
Rock Springs, Wyoming
Other
1 DCFC
Electrify America Charging Station
Rock Springs, Wyoming
Electrify America
1 DCFC
EVgo Charging Station
Rock Springs, Wyoming
EVgo
1 DCFC
Pilot Flying J Charging Station
Rawlins, Wyoming
Other
1 DCFC
Flying J EV Charging Station
Rock Springs, Wyoming
Other
1 DCFC
Pilot Flying J Charging Station
Rock Springs, Wyoming
Other
1 DCFC
Other: 4
Electrify America: 1
EVgo: 1
Station data from NREL Alternative Fuel Stations database.
Driving Electric?
About $37 in charging
· 1 stop
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
105.4
1
$36.89
$16.86
Efficient EV
87.8
1
$30.74
$14.05
EV Truck/SUV
140.5
1
$49.18
$22.48
Gas CO2
123 kg
EV CO2
41 kg (67% less)
Plan for 1 charging stop. A 30-minute DC fast charge mid-route should be enough to complete the trip comfortably.
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 Oct 19, 2026
Origin
Sleepy Hollow, WY
Late night
in Sleepy Hollow on Monday
Local time
3:54 AM
MDT
Current temp
39°F
Mostly Clear
SE 12 to 20 mph0% chanceLive forecast
Destination
Rock Springs, WY
Late night
in Rock Springs on Monday
Local time
3:54 AM
MDT
Current temp
36°F
Mostly Clear
SSE 5 mph1% chanceLive 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
3 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
6h 28m on the road
Start early — leave by 6-7 AM to arrive at a reasonable hour.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
More Details
What kind of drive is this?
This drive is about 48% highway, meaning you'll spend a significant portion on the Dwight D. Eisenhower Highway. You'll encounter a longest stretch of 103.6 miles on this highway before transitioning to other roads. Expect to see a mix of highway cruising and some time on surface roads like County Road 308 and WY 387. This transition from higher-speed highway driving to potentially slower surface roads will be a noticeable change.
48% highway, the rest on surface roads — varied driving throughout.
31 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 103.6 mi on Dwight D. Eisenhower Highway.
How Hard Is This Drive?
5/10
This route mixes highway mileage with some local-road sections near the start or finish. You will hit about 25 points where you need to pay attention to lane position or signs. The trickiest moment comes around 0.7 miles in near Irving Boulevard.
Driving Effort5/10
Moderate - straightforward overall, but long enough or busy enough to require pacing
Balances navigation complexity with total wheel time.
This drive requires moderate attention. Across 351.3 miles you will encounter 25 spots where lane choice or exit timing matters. Not difficult for experienced highway drivers, but worth previewing the tricky sections before you go.
Where does it get tricky?
The main spots that need attention: at 0.7 miles (Irving Boulevard): Navigation decision point; at 0.9 miles (Sleepy Hollow Boulevard): Navigation decision point; at 1.3 miles (Union Chapel Road): Navigation decision point.
Elevation Profile
High-altitude sections with notable climbs
7,016 ft4,567 ft
Total Climb
2,504 ft
Total Descent
674 ft
Highest Point
7,016 ft
~251.7 mi in
Elevation Range
2,449 ft
Notable High Points
5,249 ft at ~75.5 miles+38 ft prominence
7,016 ft at ~251.7 miles+95 ft prominence
6,938 ft at ~302 miles+17 ft prominence
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 Sleepy Hollow, WY to Rock Springs, WY, road signs begin pointing toward Port Of Entry 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.
Doable as a same-day drive at 6h 28m. Total distance: 351.3 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
6h 28m drive, plan rest stops for pacing.
First-Time Driver
Mostly highway driving (48%). Some complex stretches to watch for.
Scenic Drive
Mixed highway & surface route profile with national parks nearby.
Frequently Asked Questions
The longest stretch is about 103.6 miles on Dwight D. Eisenhower Highway. The full list of main roads is in the Roads section above.
Yes — we found about 7 rest areas or service plazas within a short detour of the route (from OpenStreetMap). See the Rest Stops tab under Nearby Places for locations and mile markers. Plan to stretch, use the bathroom, and top off fluids every 2–3 hours on longer drives.
It helps. This is a long drive, so arriving tired and in the dark compounds. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at Rock Springs, WY before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Only with planning. This is a long drive for kids — consider splitting it into two days rather than pushing through. Plan at least 1 meaningful breaks. There are 7 rest areas along the route for bathroom stops.
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: at 0.7 miles (Irving Boulevard): Navigation decision point; at 0.9 miles (Sleepy Hollow Boulevard): Navigation decision point; at 1.3 miles (Union Chapel Road): Navigation decision point.
Not recommended in a single day. At 6.5 hours each way, a round trip means 12.9 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Rock Springs, WY before the return drive.
