How far is Casper, WY from Lyman, WY?
The driving distance from Casper, WY to Lyman, WY is about 297.1 miles (478.1 km), with a travel time of about 05h 19m by car.
- The straight-line flight distance is about 230 miles (370.2 km).
- For a round trip, plan for roughly 10h 38m 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 19m.
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 of the United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Slight Chance T-storms
Driving Route Map
The map below follows the saved road route between Casper and Lyman.
Turn-by-Turn Driving Directions
Step-by-step road directions between Casper and Lyman.
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1
Start on North Sunlight Drive
1368 ft · 1 min · North Sunlight Drive
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2
Turn right
770 ft · 34 sec
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3
Turn right onto East Sunlight Drive
2655 ft · 2 min · East Sunlight Drive
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4
At the end of the road, turn right onto Bryan Stock Trail
1.1 mi · 2 min · Bryan Stock Trail
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5
Turn right onto East F Street
967 ft · 16 sec · East F Street
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6
Take the ramp straight
2.1 mi · 3 min
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7
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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8
Keep slight left
107 m · 11 sec
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9
Turn left
3 mi · 4 min
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10
Continue on Casper West Belt
7.3 mi · 9 min · Casper West Belt
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11
Turn right onto County Road 308
63.7 mi · 1 hr 12 min · County Road 308
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12
Continue straight
44.1 mi · 51 min
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13
Turn right onto West Spruce Street
1.5 mi · 2 min · West Spruce Street
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14
Take the ramp right
1 km · 1 min
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15
Merge slight left onto Dwight D. Eisenhower Highway
168.7 mi · 2 hr 44 min · Dwight D. Eisenhower Highway
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16
Take the exit slight right toward WY 413: Lyman
1964 ft · 53 sec
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17
Turn left
2.8 mi · 5 min
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18
At the end of the road, turn right onto North Main Street
1354 ft · 29 sec · North Main Street
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19
Turn left onto East Owen Street
3 m · 1 sec · East Owen Street
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20
Arrive at your destination
0 m · 1 sec · East Owen Street
Car Route Details
A richer read on the saved driving route between Casper and Lyman.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Dwight D. Eisenhower Highway
Merge slight left onto Dwight D. Eisenhower Highway
169 mi · 02h 44m
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 Casper and Slight Chance T-storms near Lyman.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Casper to Lyman?
The road trip is about 297.1 miles (478.1 km) and usually takes 05h 19m 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?
Wamsutter is a useful midpoint, sitting about 148.3 miles from Casper and 148.8 miles from Lyman.
How much longer is the road route than the straight-line distance?
The direct path is about 230 miles (370.2 km), while the road route adds roughly 67.1 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 6:22 AM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $40.80 one way or $81.60 round trip. Estimated CO2 is about 93.1 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Casper and Slight Chance T-storms near Lyman.
Flight Path Map
This map shows the direct air route between Casper and Lyman. Straight-line distance: 230.06 mi (370.24 km).
#1 Casper
The most populous city in Natrona County, Wyoming.
| Population | 58,498 |
| Coordinates | 42.8666300, -106.3130800 |
| Altitude | 1560 |
| Country | United States |
#2 Lyman
Town in Uinta County, Wyoming
| Population | 2,083 |
| Coordinates | 41.3274500, -110.2929300 |
| Altitude | 2044 |
| Country | United States |
End: Lyman (-110.29293, 41.32745)
Estimated Travel Time
Distance: 478 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 09h 53m |
| 40 mph (64.37 km/h) | 07h 25m |
| 50 mph (80.47 km/h) | 05h 56m |
| 60 mph (96.56 km/h) | 04h 57m |
| 70 mph (112.65 km/h) | 04h 14m |
| 80 mph (129 km/h) | 03h 42m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $40.80 | $81.60 |
| Mid-grade | $4.23 | $44.34 | $88.68 |
| Premium | $4.55 | $47.67 | $95.35 |
| Diesel | $5.41 | $56.72 | $113.44 |
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.