Cody, WY to Sleepy Hollow, WY is 256.7 miles and takes about 4h 59m via I 90 and local roads, with a fuel budget near $41 and enough daylight to finish in a day. This trip stays within the Mountain West region, offering a straightforward drive from one Wyoming point to another. Expect a mixed driving experience that's manageable for a single day. It’s a practical route for getting from point A to point B without extensive detours, making it a good option if you're looking for efficiency.
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
128.3 miles from Cody, WY
A natural place for your longest stop of the day
, about 2h 40m into the drive
.
Main Roads
Road
Distance
Duration
I 90
118.1 mi
1h 59m
Greybull Avenue
78.8 mi
1h 43m
Greybull Highway
49.9 mi
55m
South Douglas Highway
4.1 mi
7m
US 14
2.3 mi
3m
Union Chapel Road
1.2 mi
3m
17th Street
0.7 mi
1m
Katrina Avenue
0.3 mi
1m
Longest stretch:
I 90
— 118.1 mi, about 1h 59m
Traffic on I-90
Hour-of-day weekday pattern from 8 FHWA count stations on your route.
Peak
3 PM
~222 veh/hr typical
· worst 325
Quietest
2 AM
~12 veh/hr
Peak-to-quiet ratio
18.5×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 49 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 Cody, WY and Sleepy Hollow, WY.
1
Start on US 14A; WY 120
504 ft·22 sec·16th Street
2
Turn left onto Beck Avenue
493 ft·17 sec·Beck Avenue
3
Turn right onto US 14; US 16; US 20; WY 120
0.7 mi·1 min·17th Street
4
Continue on US 14; US 16; US 20; WY 120
50 mi·55 min·Greybull Highway
5
Continue on US 14; US 16; US 20; WY 789
2.3 mi·3 min·US 14; US 16; US 20; WY 789
6
Turn left onto US 14
79 mi·1 hr 43 min·Greybull Avenue
7
Take the ramp onto I 90; US 87
0.4 mi·50 sec·I 90; US 87
8
Continue on I 90; US 14; US 87
117 mi·1 hr 57 min·I 90; US 14; US 87
9
Take the exit onto I 90
0.6 mi·1 min·I 90
10
Turn right onto WY 59
4.1 mi·7 min·South Douglas Highway
11
Turn left onto Union Chapel Road
1.2 mi·3 min·Union Chapel Road
12
Turn left onto Mather Avenue
0.2 mi·57 sec·Mather Avenue
13
At end of road, turn right onto Sleepy Hollow Boulevard
0.2 mi·46 sec·Sleepy Hollow Boulevard
14
Turn left onto Irving Boulevard
0.2 mi·45 sec·Irving Boulevard
15
Turn right onto Tarry Street
0.1 mi·38 sec·Tarry Street
16
Turn left onto Katrina Avenue
0.3 mi·1 min·Katrina Avenue
17
Turn right
391 ft·17 sec
18
Continue on this road
459 ft·20 sec·this road
19
Turn left
274 ft·20 sec
20
Arrive at destination
Trip Plan
Given the 4h 59m duration, starting your drive in Cody, WY after breakfast is ideal, allowing ample daylight to reach Sleepy Hollow. With only one recommended stop, plan it strategically around the halfway point or when you need a break from the 118.1-mile stretch on I 90. Keep an eye on your fuel gauge, especially as you move onto Greybull Avenue and Greybull Highway, as services might be more spread out than on the interstate. The $41 fuel estimate is a good baseline for budgeting this one-day trip.
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 128.3 miles from Cody, WY, or about 2h 40m into the drive.
The longest continuous stretch on this route runs about 118.1 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 56 miles or 1h 5m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 128.3 miles or 2h 40m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 4h 4m
Traffic, exits, and arrival timing usually matter more near Sleepy Hollow, WY than in the middle of the route.
Before You Leave
+
Open the route before leaving Cody, 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 Cody, WY
This is one driving day of about 256.7 miles and 4h 59m.
Your first comfortable stop window is around 56 miles from Cody, 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 I 90 for about 118.1 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 0.1 and 256 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
5
0.1 mi into trip|~0m in|Beck Avenue
Turn left onto Beck Avenue
Navigation decision point
4
0.2 mi into trip|~0m in|US 14; US 16; US 20; WY 120 / 17th Street
Turn right onto US 14; US 16; US 20; WY 120 / 17th Street
Navigation decision point
4
53.1 mi into trip|~1h 1m in|US 14 / Greybull Avenue
Turn left onto US 14 / Greybull Avenue
Navigation decision point
5
255.6 mi into trip|~4h 55m in|Sleepy Hollow Boulevard
At end of road, turn right onto Sleepy Hollow Boulevard
Navigation decision point
5
256 mi into trip|~4h 56m in|Tarry Street
Turn right onto Tarry Street
Navigation decision point
Fuel & Cost
Regular Gas
$40.01 one way
$80.02 round trip
$3.96/gal25.4 MPG avg90 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.17
$42.17
$84.35
premium
$4.47
$45.22
$90.43
diesel
$4.80
$48.47
$96.94
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$40
Meals
$25–$50
Total
$65–$90
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 89.8 kg one way.
Prices: EIA weekly data, 2026-07-13.
Driving Electric?
About $27 in charging
· 0 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
77
0
$26.95
$12.32
Efficient EV
64.2
0
$22.46
$10.27
EV Truck/SUV
102.7
1
$35.94
$16.43
Gas CO2
90 kg
EV CO2
30 kg (67% less)
Plan for 0 charging stops, roughly every 270 miles. Allow 25-40 minutes per stop at a DC fast charger.
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 Jul 18, 2026
Origin
Cody, WY
Late night
in Cody on Sunday
Local time
3:24 AM
MDT
Current temp
64°F
Slight Chance Rain Showers
WSW 2 mph16% chanceLive forecast
Flood Watch
Flood Watch issued July 18 at 2:37AM MDT until July 18 at 10:00PM MDT by NWS Riverton WY
Heat Advisory
Heat Advisory issued July 18 at 1:23AM MDT until July 19 at 9:00PM MDT by NWS Rapid City SD
Destination
Sleepy Hollow, WY
Late night
in Sleepy Hollow on Sunday
Local time
3:24 AM
MDT
Current temp
66°F
Slight Chance Showers And Thunderstorms
SE 10 mph21% chanceLive forecast
Flood Watch
Flood Watch issued July 18 at 2:37AM MDT until July 18 at 10:00PM MDT by NWS Riverton WY
Heat Advisory
Heat Advisory issued July 18 at 1:23AM MDT until July 19 at 9:00PM MDT by NWS Rapid City SD
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
2 degrees warmer at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
4h 59m on the road
An early start around 7-8 AM gets you there with plenty of daylight left.
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 offers a mixed profile, with 47% of the journey on highways. You'll experience some stretches on I 90, which can feel like a straightforward cruise, and other sections on local roads like Greybull Avenue and Greybull Highway. The longest uninterrupted stretch you'll encounter is 118.1 miles on I 90, meaning you can settle in for a good period of consistent driving. As you transition between these road types, the pace and scenery will subtly shift, providing a varied driving experience.
47% highway, the rest on surface roads — varied driving throughout.
20 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 118.1 mi on I 90.
How Hard Is This Drive?
3/10
This route mixes highway mileage with some local-road sections near the start or finish. There are only a few real navigation decisions along the way. The trickiest moment comes around 0.1 miles in near Beck Avenue.
Driving Effort3/10
Easy - simple navigation with a manageable amount of wheel time
Balances navigation complexity with total wheel time.
This is a straightforward 4h 59m drive. You will face about 14 decision points, but nothing that requires special attention if you follow navigation.
Where does it get tricky?
The main spots that need attention: at 0.1 miles (Beck Avenue): Navigation decision point; at 0.2 miles (US 14; US 16; US 20; WY 120 / 17th Street): Navigation decision point; at 53.1 miles (US 14 / Greybull Avenue): Navigation decision point.
Elevation Profile
Mountain driving with significant elevation changes
Cody is in Northwest Wyoming, close to the east side Yellowstone National Park. Unlike Jackson, with its pet spas and high-end shopping, Cody is more authentically cowboy. Cody is famous for its rodeo, which occurs nightly during the summer, and for its proximity to fantastic wilderness adventures in Yellowstone and in the national forests surrounding the park.
The longest stretch is about 118.1 miles on I 90. The full list of main roads is in the Roads section above.
Yes — we found about 6 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.
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: at 0.1 miles (Beck Avenue): Navigation decision point; at 0.2 miles (US 14; US 16; US 20; WY 120 / 17th Street): Navigation decision point; at 53.1 miles (US 14 / Greybull Avenue): Navigation decision point.
Possible but tiring. At 5.0 hours each way, an in-and-out day trip would put you behind the wheel for 10.0 hours — manageable with a long break at Sleepy Hollow, WY, but most travelers stay overnight.
