Cody, WY to Green River, WY is 291.6 miles and takes about 5h 35m via WY 120 and Highway 28, with a fuel budget near $46 and enough daylight to finish in a day. This trip stays within the Mountain West region, offering a straightforward drive through Wyoming's varied landscapes. It’s a solid choice if you're looking for a direct connection between these two Wyoming points with minimal fuss. Plan for a single-day journey, as the duration is quite manageable.
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
145.8 miles from Cody, WY
A natural place for your longest stop of the day
, about 2h 47m into the drive
.
Main Roads
Road
Distance
Duration
WY 120
81.5 mi
1h 29m
Highway 28
66.5 mi
1h 15m
Farson Mercantile
38.1 mi
43m
US 20
31 mi
36m
US 26
18.9 mi
21m
West 2nd Street
18.2 mi
20m
Dwight D. Eisenhower Highway
12.7 mi
12m
South Main Street
9.8 mi
11m
Longest stretch:
WY 120
— 81.5 mi, about 1h 29m
Traffic on I-80
Hour-of-day weekday pattern from 4 FHWA count stations on your route.
Peak
4 PM
~885 veh/hr typical
· worst 1,129
Quietest
2 AM
~97 veh/hr
Peak-to-quiet ratio
9.1×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 52 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 Green River, 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
1.4 mi·1 min·Greybull Highway
5
Turn right onto WY 120
82 mi·1 hr 29 min·WY 120
Use the straight / right lanes.
6
Turn right onto South 8th Street
0.5 mi·2 min·South 8th Street
7
Turn right onto US 20; WY 789
0.7 mi·1 min·Shoshoni Street
Use the straight / right lanes.
8
Continue on US 20; WY 789
31 mi·36 min·US 20; WY 789
Use the straight / right lanes.
9
Turn right onto US 26; WY 789
18 mi·20 min·West 2nd Street
10
Continue on US 26; WY 789
19 mi·21 min·US 26; WY 789
Use the straight lane.
11
Continue on WY 789
9.8 mi·11 min·South Main Street
12
Turn left onto US 287; WY 789
8.4 mi·9 min·East Main Street
13
Continue on WY 28
66 mi·1 hr 15 min·Highway 28
14
Turn left onto US 191
38 mi·43 min·Farson Mercantile
15
Continue on US 191
0.9 mi·1 min·Elk Street
16
Take the exit
0.3 mi·42 sec
17
Merge onto I 80; US 30
13 mi·12 min·Dwight D. Eisenhower Highway
18
Take the exit onto I 80 Bus; US 30 Bus
1.9 mi·4 min·I 80 Bus; US 30 Bus
Toward I 80 Business West, US 30 Business West: Green River
19
Turn right onto North 1st East
35 ft·1 sec·North 1st East
20
Arrive at destination
North 1st East
Trip Plan
Starting your journey from Cody in the morning is recommended to take full advantage of daylight for the roughly 5.5-hour drive. With only one recommended stop and a longest stretch of 81.5 miles, you can comfortably complete this trip in a single day. Keep an eye on your fuel gauge, especially as you transition onto Highway 28 and potentially encounter fewer services. The fuel cost is estimated at $46, so budget accordingly before you depart.
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 145.8 miles from Cody, WY, or about 2h 47m into the drive.
The longest continuous stretch on this route runs about 81.5 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 64 miles or 1h 11m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 145.8 miles or 2h 47m 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 34m
Traffic, exits, and arrival timing usually matter more near Green River, 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 291.6 miles and 5h 35m.
Your first comfortable stop window is around 64 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 WY 120 for about 81.5 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 12
5 decision points cluster between mile 0.1 and 289.7 — 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
5
2.2 mi into trip|~4m in|WY 120
Turn right onto WY 120
Lane positioning matters here
Use the straight / right lanes.
5
84.3 mi into trip|~1h 35m in|US 20; WY 789 / Shoshoni Street
Turn right onto US 20; WY 789 / Shoshoni Street
Lane positioning matters here
Use the straight / right lanes.
5
289.7 mi into trip|~5h 31m in|I 80 Bus; US 30 Bus
Take the exit onto I 80 Bus; US 30 Bus toward I 80 Business West, US 30 Business West: Green River
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Toward I 80 Business West, US 30 Business West:...
Fuel & Cost
Regular Gas
$45.45 one way
$90.90 round trip
$3.96/gal25.4 MPG avg102 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.17
$47.91
$95.81
premium
$4.47
$51.36
$102.73
diesel
$4.80
$55.06
$110.12
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$45
Meals
$25–$50
Total
$70–$95
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 102 kg one way.
Prices: EIA weekly data, 2026-07-13.
Driving Electric?
About $31 in charging
· 1 stop
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
87.5
1
$30.62
$14.00
Efficient EV
72.9
0
$25.52
$11.66
EV Truck/SUV
116.6
1
$40.82
$18.66
Gas CO2
102 kg
EV CO2
34 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 Jul 17, 2026
Origin
Cody, WY
Late night
in Cody on Sunday
Local time
1:06 AM
MDT
Current temp
90°F
Chance Showers And Thunderstorms
WSW 8 mph57% chanceLive forecast
Heat Advisory
Heat Advisory issued July 17 at 3:07PM MDT until July 19 at 9:00PM MDT by NWS Rapid City SD
Heat Advisory
Heat Advisory issued July 17 at 12:12PM MDT until July 20 at 6:00PM MDT by NWS Cheyenne WY
Destination
Green River, WY
Late night
in Green River on Sunday
Local time
1:06 AM
MDT
Current temp
91°F
Slight Chance Showers And Thunderstorms
WSW 7 mph17% chanceLive forecast
Heat Advisory
Heat Advisory issued July 17 at 3:07PM MDT until July 19 at 9:00PM MDT by NWS Rapid City SD
Heat Advisory
Heat Advisory issued July 17 at 12:12PM MDT until July 20 at 6:00PM MDT by NWS Cheyenne WY
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
1 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
5h 35m 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 route is primarily a highway-focused drive, with 68% of it on faster roads. You'll encounter stretches that are more about covering ground efficiently, especially on WY 120, where the longest uninterrupted segment spans 81.5 miles. While it's largely highway, expect some transitions as you move between major routes like WY 120 and Highway 28. The overall feel is one of open roads, characteristic of drives through Wyoming.
68% highway — fuel and pacing are the main things to plan.
20 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 81.5 mi on WY 120.
How Hard Is This Drive?
3/10
This is a straightforward highway drive that stays mostly on WY 120 and Highway 28. 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 5h 35m drive. You will face about 12 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 2.2 miles (WY 120): Lane positioning matters here.
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 81.5 miles on WY 120. The full list of main roads is in the Roads section above.
Yes — we found about 4 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.
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 4 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 0.1 miles (Beck Avenue): Navigation decision point; at 0.2 miles (US 14; US 16; US 20; WY 120 / 17th Street): Navigation decision point; at 2.2 miles (WY 120): Lane positioning matters here.
Not recommended in a single day. At 5.6 hours each way, a round trip means 11.2 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Green River, WY before the return drive.
