How far is Green River, WY from Sleepy Hollow, WY?
The driving distance from Green River, WY to Sleepy Hollow, WY is about 366.5 miles (589.9 km), with a travel time of about 06h 43m by car.
- The straight-line flight distance is about 277.5 miles (446.6 km).
- For a round trip, plan for roughly 13h 26m 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 43m.
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 of the United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Green River and Sleepy Hollow.
Turn-by-Turn Driving Directions
Step-by-step road directions between Green River and Sleepy Hollow.
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1
Start on North 1st East
11 m · 7 sec · North 1st East
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2
Turn left onto East Flaming Gorge Way
1.1 mi · 3 min · East Flaming Gorge Way
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3
Take the ramp straight toward I 80 East, US 30 East: Rock Springs
1.1 km · 1 min
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4
Merge slight left onto Dwight D. Eisenhower Highway
119.3 mi · 1 hr 56 min · Dwight D. Eisenhower Highway
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5
Take the exit slight right toward I 80 Business East, WY 789 North: Rawlins
1997 ft · 52 sec
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6
Turn left onto West Spruce Street
1.7 mi · 3 min · West Spruce Street
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7
Turn left onto 3rd Street
44.1 mi · 51 min · 3rd Street
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8
Continue straight
63.7 mi · 1 hr 13 min
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9
Turn left onto Casper West Belt
7.3 mi · 9 min · Casper West Belt
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10
Continue straight
3 mi · 4 min
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11
Turn left onto I 25 North, US 87 North: Midwest
1989 ft · 51 sec
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12
Merge slight left
20.1 mi · 19 min
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13
Take the exit slight right toward Horse Ranch Creek Road
1962 ft · 50 sec
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14
Turn right onto Horseshoe Road
17.9 mi · 20 min · Horseshoe Road
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15
Turn right
51.3 mi · 59 min
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16
Turn left onto State Highway 59 South
32.8 mi · 36 min · State Highway 59 South
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17
Turn right onto Union Chapel Road
1.2 mi · 3 min · Union Chapel Road
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18
Turn left onto Mather Avenue
1261 ft · 57 sec · Mather Avenue
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19
At the end of the road, turn right onto Sleepy Hollow Boulevard
940 ft · 46 sec · Sleepy Hollow Boulevard
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20
Turn left onto Irving Boulevard
978 ft · 45 sec · Irving Boulevard
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21
Turn right onto Tarry Street
747 ft · 38 sec · Tarry Street
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22
Turn left onto Katrina Avenue
1704 ft · 1 min · Katrina Avenue
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23
Turn right
119 m · 17 sec
-
24
Continue straight
140 m · 21 sec
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25
Turn left
84 m · 20 sec
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26
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Green River and Sleepy Hollow.
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
119 mi · 01h 56m
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.
Sunny leaving Green River and Mostly Sunny near Sleepy Hollow.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Green River to Sleepy Hollow?
The road trip is about 366.5 miles (589.9 km) and usually takes 06h 43m 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?
Bairoil is a useful midpoint, sitting about 183 miles from Green River and 183.6 miles from Sleepy Hollow.
How much longer is the road route than the straight-line distance?
The direct path is about 277.5 miles (446.6 km), while the road route adds roughly 89 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 $57.93 one way or $115.85 round trip. Estimated CO2 is about 114.9 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Green River and Mostly Sunny near Sleepy Hollow.
Flight Path Map
This map shows the direct air route between Green River and Sleepy Hollow. Straight-line distance: 277.5 mi (446.59 km).
#1 Green River
River in Wyoming, Utah, and Colorado, in the United States, that is a tributary of the Colorado River
| Population | 11,788 |
| Coordinates | 41.5285800, -109.4662500 |
| Altitude | 1864 |
| Country | United States |
#2 Sleepy Hollow
Situated in the high plains of northeastern Wyoming at an elevation of 4,560 feet, this Campbell County census-designated place lies just south of the city of Gillette.
| Population | 0 |
| Coordinates | 44.2410900, -105.4222200 |
| Altitude | 1390 |
| Country | United States |
End: Sleepy Hollow (-105.42222, 44.24109)
Estimated Travel Time
Distance: 590 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 12h 12m |
| 40 mph (64.37 km/h) | 09h 09m |
| 50 mph (80.47 km/h) | 07h 19m |
| 60 mph (96.56 km/h) | 06h 06m |
| 70 mph (112.65 km/h) | 05h 14m |
| 80 mph (129 km/h) | 04h 34m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.48 | $57.93 | $115.85 |
| Mid-grade | $4.74 | $61.31 | $122.63 |
| Premium | $5.07 | $65.56 | $131.11 |
| Diesel | $6.21 | $80.28 | $160.56 |
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 · Oct 15, 2026