How far is Green River, WY from Sundance, WY?
The driving distance from Green River, WY to Sundance, WY is about 428.1 miles (688.9 km), with a travel time of about 07h 43m by car.
- The straight-line flight distance is about 325.1 miles (523.2 km).
- For a round trip, plan for roughly 15h 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 07h 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 in Uinta County, Wyoming, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Slight Chance Snow Showers
Rain And Snow Showers
Driving Route Map
The map below follows the saved road route between Green River and Sundance.
Turn-by-Turn Driving Directions
Step-by-step road directions between Green River and Sundance.
-
1
Start on North 1st East
11 m · 7 sec · North 1st East
-
2
Turn left onto East Flaming Gorge Way
1.1 mi · 3 min · East Flaming Gorge Way
-
3
Take the ramp straight toward I 80 East, US 30 East: Rock Springs
1.1 km · 1 min
-
4
Merge slight left onto Dwight D. Eisenhower Highway
119.3 mi · 1 hr 56 min · Dwight D. Eisenhower Highway
-
5
Take the exit slight right toward I 80 Business East, WY 789 North: Rawlins
1997 ft · 52 sec
-
6
Turn left onto West Spruce Street
1.7 mi · 3 min · West Spruce Street
-
7
Turn left onto 3rd Street
44.1 mi · 51 min · 3rd Street
-
8
Continue straight
63.7 mi · 1 hr 13 min
-
9
Turn left onto Casper West Belt
7.3 mi · 9 min · Casper West Belt
-
10
Continue straight
3 mi · 4 min
-
11
Turn left onto I 25 North, US 87 North: Midwest
1989 ft · 51 sec
-
12
Merge slight left
20.1 mi · 19 min
-
13
Take the exit slight right toward Horse Ranch Creek Road
1962 ft · 50 sec
-
14
Turn right onto Horseshoe Road
17.9 mi · 20 min · Horseshoe Road
-
15
Turn right
51.3 mi · 59 min
-
16
Turn left onto State Highway 59 South
32.8 mi · 36 min · State Highway 59 South
-
17
Continue on South Douglas Highway
1.7 mi · 2 min · South Douglas Highway
-
18
Take the exit slight right
133 m · 13 sec
-
19
Turn straight onto South Garner Lake Road
4 mi · 6 min · South Garner Lake Road
-
20
Take the ramp right
56.5 mi · 56 min
-
21
Take the exit slight right
1370 ft · 34 sec
-
22
Turn right onto US Highway 14
1.1 km · 1 min · US Highway 14
-
23
Continue on South West Street
2644 ft · 45 sec · South West Street
-
24
Continue on East Cleveland Street
1834 ft · 31 sec · East Cleveland Street
-
25
Arrive at your destination
0 m · 1 sec · East Cleveland Street
Car Route Details
A richer read on the saved driving route between Green River and Sundance.
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.
Slight Chance Snow Showers leaving Green River and Rain And Snow Showers near Sundance.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Green River to Sundance?
The road trip is about 428.1 miles (688.9 km) and usually takes 07h 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?
Mountain View is a useful midpoint, sitting about 213.8 miles from Green River and 214.3 miles from Sundance.
How much longer is the road route than the straight-line distance?
The direct path is about 325.1 miles (523.2 km), while the road route adds roughly 103 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 $58.82 one way or $117.65 round trip. Estimated CO2 is about 134.3 kg one way.
What should you check before leaving?
Before you leave, expect Slight Chance Snow Showers around Green River and Rain And Snow Showers near Sundance.
Stop Ideas Near Mountain View
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Mountain View.
Casper, Wyoming
Douglas, Wyoming
Flight Path Map
This map shows the direct air route between Green River and Sundance. Straight-line distance: 325.12 mi (523.23 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 Sundance
Town in Crook County, Wyoming, United States
| Population | 1,296 |
| Coordinates | 44.4063700, -104.3757800 |
| Altitude | 1444 |
| Country | United States |
End: Sundance (-104.37578, 44.40637)
Estimated Travel Time
Distance: 689 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 14h 15m |
| 40 mph (64.37 km/h) | 10h 42m |
| 50 mph (80.47 km/h) | 08h 33m |
| 60 mph (96.56 km/h) | 07h 08m |
| 70 mph (112.65 km/h) | 06h 06m |
| 80 mph (129 km/h) | 05h 20m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $58.82 | $117.65 |
| Mid-grade | $4.23 | $63.93 | $127.86 |
| Premium | $4.55 | $68.74 | $137.47 |
| Diesel | $5.41 | $81.78 | $163.55 |
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 · Apr 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.