How far is Sleepy Hollow, WY from Green River, WY?
The driving distance from Sleepy Hollow, WY to Green River, WY is about 367.7 miles (591.7 km), with a travel time of about 06h 12m by car.
- The straight-line flight distance is about 277.5 miles (446.6 km).
- For a round trip, plan for roughly 12h 25m 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 12m.
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
Sunny
Driving Route Map
The map below follows the saved road route between Sleepy Hollow and Green River.
Turn-by-Turn Driving Directions
Step-by-step road directions between Sleepy Hollow and Green River.
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1
Start on the route
1124 ft · 59 sec
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2
Turn left onto Katrina Avenue
1704 ft · 1 min · Katrina Avenue
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3
Turn right onto Tarry Street
747 ft · 39 sec · Tarry Street
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4
Turn left onto Irving Boulevard
978 ft · 45 sec · Irving Boulevard
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5
At the end of the road, turn right onto Sleepy Hollow Boulevard
940 ft · 46 sec · Sleepy Hollow Boulevard
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6
Turn left onto Mather Avenue
1261 ft · 58 sec · Mather Avenue
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7
At the end of the road, turn right onto Union Chapel Road
1.2 mi · 3 min · Union Chapel Road
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8
Turn left onto State Highway 59 South
32.8 mi · 36 min · State Highway 59 South
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9
Turn right
51.3 mi · 59 min
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10
Turn left
18.1 mi · 21 min
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11
Take the exit left toward I 25 South: Casper
2173 ft · 53 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 US 20 West, US 26 West, WY 220 West: Shoshoni, Port of Entry
1757 ft · 43 sec
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14
Keep slight left
577 ft · 17 sec
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15
Turn right
2.7 mi · 3 min
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16
Continue on Casper West Belt
7.3 mi · 9 min · Casper West Belt
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17
Turn right onto County Road 308
63.7 mi · 1 hr 12 min · County Road 308
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18
Continue straight
44.1 mi · 51 min
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19
Turn right onto West Spruce Street
1.5 mi · 2 min · West Spruce Street
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20
Take the ramp right
1 km · 1 min
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21
Merge slight left onto Dwight D. Eisenhower Highway
119.1 mi · 1 hr 56 min · Dwight D. Eisenhower Highway
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22
Take the exit slight right toward I 80 Business West, US 30 Business West: Green River
1.9 mi · 4 min
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23
Turn right onto North 1st East
11 m · 2 sec · North 1st East
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24
Arrive at your destination
0 m · 1 sec · North 1st East
Car Route Details
A richer read on the saved driving route between Sleepy Hollow and Green River.
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.
Mostly Sunny leaving Sleepy Hollow and Sunny near Green River.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Sleepy Hollow to Green River?
The road trip is about 367.7 miles (591.7 km) and usually takes 06h 12m 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 183.1 miles from Sleepy Hollow and 184.5 miles from Green River.
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 90.2 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 $58.11 one way or $116.21 round trip. Estimated CO2 is about 115.3 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Sleepy Hollow and Sunny near Green River.
Flight Path Map
This map shows the direct air route between Sleepy Hollow and Green River. Straight-line distance: 277.5 mi (446.59 km).
#1 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 |
#2 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 |
End: North 1st East (-109.466324, 41.528621)
Estimated Travel Time
Distance: 592 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 12h 14m |
| 40 mph (64.37 km/h) | 09h 11m |
| 50 mph (80.47 km/h) | 07h 21m |
| 60 mph (96.56 km/h) | 06h 07m |
| 70 mph (112.65 km/h) | 05h 15m |
| 80 mph (129 km/h) | 04h 35m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.48 | $58.11 | $116.21 |
| Mid-grade | $4.74 | $61.50 | $123.01 |
| Premium | $5.07 | $65.76 | $131.52 |
| Diesel | $6.21 | $80.53 | $161.06 |
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