How far is Cheyenne, WY from Thermopolis, WY?
The driving distance from Cheyenne, WY to Thermopolis, WY is about 308.3 miles (496.1 km), with a travel time of about 05h 27m by car.
- The straight-line flight distance is about 244.8 miles (393.9 km).
- For a round trip, plan for roughly 10h 55m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 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 05h 27m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
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 Converse County, Wyoming, 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 Cheyenne and Thermopolis.
Turn-by-Turn Driving Directions
Step-by-step road directions between Cheyenne and Thermopolis.
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1
Start on West 24th Street
89 m · 12 sec · West 24th Street
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2
Turn right onto Carey Avenue
565 ft · 13 sec · Carey Avenue
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3
Turn slight left onto Randall Avenue
1.5 km · 2 min · Randall Avenue
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4
Turn right onto Hynds Boulevard
103 m · 6 sec · Hynds Boulevard
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5
Take the ramp straight
1190 ft · 29 sec
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6
Merge slight left
1.5 mi · 2 min
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7
Continue straight
3.9 mi · 4 min
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8
Continue straight
75.6 mi · 1 hr 11 min
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9
Continue straight
34 mi · 32 min
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10
Continue straight
62.3 mi · 1 hr 5 min
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11
Take the exit slight right toward US 20 West, US 26 West, WY 220 West: Shoshoni, Port of Entry
1846 ft · 45 sec
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12
Keep slight left
107 m · 11 sec
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13
Turn left
3 mi · 4 min
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14
Turn right onto West Yellowstone Highway
35.8 mi · 41 min · West Yellowstone Highway
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15
Continue on West US Highway 20-26
58 mi · 1 hr 6 min · West US Highway 20-26
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16
Turn right onto Idaho Street
31.9 mi · 38 min · Idaho Street
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17
Turn left onto South 6th Street
2765 ft · 1 min · South 6th Street
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18
Arrive at your destination
0 m · 1 sec · South 6th Street
Car Route Details
A richer read on the saved driving route between Cheyenne and Thermopolis.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
Hynds Boulevard
Continue straight
75.6 mi · 01h 11m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Mostly Sunny leaving Cheyenne and Sunny near Thermopolis.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Cheyenne to Thermopolis?
The road trip is about 308.3 miles (496.1 km) and usually takes 05h 27m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Glenrock is a useful midpoint, sitting about 154 miles from Cheyenne and 154.3 miles from Thermopolis.
How much longer is the road route than the straight-line distance?
The direct path is about 244.8 miles (393.9 km), while the road route adds roughly 63.5 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 8:00 AM MDT. If you want a more comfortable same-day return, try to leave by 6:04 AM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $42.36 one way or $84.71 round trip. Estimated CO2 is about 96.7 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Cheyenne and Sunny near Thermopolis.
Stop Ideas Near Glenrock
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 Glenrock.
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Flight Path Map
This map shows the direct air route between Cheyenne and Thermopolis. Straight-line distance: 244.78 mi (393.93 km).
#1 Cheyenne
The most populous city in Laramie County, Wyoming.
| Population | 64,742 |
| Coordinates | 41.1399800, -104.8202500 |
| Altitude | 1856 |
| Country | United States |
#2 Thermopolis
Town of the United States
| Population | 2,770 |
| Coordinates | 43.6460700, -108.2120400 |
| Altitude | 1320 |
| Country | United States |
End: Thermopolis (-108.21204, 43.64607)
Estimated Travel Time
Distance: 496 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 10h 16m |
| 40 mph (64.37 km/h) | 07h 42m |
| 50 mph (80.47 km/h) | 06h 09m |
| 60 mph (96.56 km/h) | 05h 08m |
| 70 mph (112.65 km/h) | 04h 24m |
| 80 mph (129 km/h) | 03h 50m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $42.36 | $84.71 |
| Mid-grade | $4.23 | $46.03 | $92.07 |
| Premium | $4.55 | $49.49 | $98.99 |
| Diesel | $5.41 | $58.88 | $117.77 |
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.