Origin
Casper, WY
Night in Casper on Saturday
Local time
10:18 PM
MDT
Current temp
44°F
Unavailable
Live forecast
Trip from Casper, WY to Douglas, WY
Compiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 19, 2026 · Editorial standards
Drive Time
58m
Distance
50.6 mi
81 km
Drive Score
7/10
Good drive
Same Day?
Yes, doable
Fuel Cost
$8
one way
EV Charging
Unknown
Best Time to Leave
4 AM
0h 54m
★
6 AM
0h 58m
8 AM
1h 8m
10 AM
1h 2m
12 PM
1h 1m
3 PM
1h 2m
5 PM
1h 7m
8 PM
0h 56m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Casper, WY
Taryn Elliott
Douglas, WY
Wikimedia Commons
Trip Overview
Casper to Douglas is 50.6 miles and takes about 58 minutes via I 25, with a fuel budget near $8 and enough daylight to finish in a day. This short jaunt stays within Wyoming and the Mountain West region, offering a straightforward drive. You'll primarily be on interstate, making it a convenient option if you're looking for a quick connection between these two points without much fuss. Consider this an easy leg of a larger trip or a simple point-to-point journey.
Main Roads
| Road | Distance | Duration |
|---|---|---|
| I 25 | 45.6 mi | 47m |
| I 25 BUS | 2.2 mi | 4m |
| Bryan Stock Trail | 1.1 mi | 1m |
| East Sunlight Drive | 0.5 mi | 1m |
| East Yellowstone Highway | 0.3 mi | <1m |
| North Sunlight Drive | 0.3 mi | 1m |
| North Beverly Street | 0.2 mi | <1m |
Longest stretch:
I 25
— 45.6 mi, about 47m
Turn-by-Turn Driving Directions
Step-by-step road directions between Casper, WY and Douglas, WY.
1
Start on North Sunlight Drive
0.3 mi
·
1 min
·
North Sunlight Drive
2
Turn right
0.1 mi
·
33 sec
3
Turn right onto East Sunlight Drive
0.5 mi
·
1 min
·
East Sunlight Drive
4
At end of road, turn right onto Bryan Stock Trail
1.1 mi
·
1 min
·
Bryan Stock Trail
5
Continue on I 25 Business
0.2 mi
·
29 sec
·
North Beverly Street
6
Turn left onto I 25 BUS; US 20; US 26; US 87
0.3 mi
·
25 sec
·
East Yellowstone Highway
7
Take the ramp
0.3 mi
·
37 sec
Toward I 25 South: Douglas
8
Merge onto I 25
46 mi
·
47 min
·
I 25
9
Take the exit onto I 25 BUS; US 20 BUS; US 26 BUS; US 87 BUS
2.2 mi
·
4 min
·
I 25 BUS; US 20 BUS; US 26 BUS; US 87 BUS
Toward I 25, WY 59: Douglas, Gillette
10
Turn left
68 ft
·
4 sec
11
Arrive at destination
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Mid-route town
Meal stop
25 mi into the route
Best for: Lunch, fuel, and a longer reset
This sits close to the middle of the route, so it works well for the longest stop of the day.
Pacing Suggestions
Fuel and coffee
A short stop after about 11 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 25.3 miles from Casper, WY, which is a good place for a longer meal and fuel stop.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Heads-up: tricky spots
5 of 75 decision points cluster between mile 0.3 and 48.4 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
5
0.3 mi into trip
|
~1m in
Turn right
Navigation decision point
5
0.9 mi into trip
|
~3m in
|
Bryan Stock Trail
At end of road, turn right onto Bryan Stock Trail
Navigation decision point
5
2.2 mi into trip
|
~6m in
|
I 25 BUS; US 20; US 26; US 87 / East Yellowstone Highway
Turn left onto I 25 BUS; US 20; US 26; US 87 / East Yellowstone Highway
Navigation decision point
4
2.5 mi into trip
|
~6m in
Take the ramp toward I 25 South: Douglas
Navigation decision point
Toward I 25 South: Douglas
5
48.4 mi into trip
|
~54m in
|
I 25 BUS; US 20 BUS; US 26 BUS; US 87 BUS
Take the exit onto I 25 BUS; US 20 BUS; US 26 BUS; US 87 BUS toward I 25, WY 59: Douglas, Gillette
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Toward I 25, WY 59: Douglas, Gillette
Fuel & Cost
Regular Gas
$8.02 one way
$16.04 round trip
$4.03/gal
25.4 MPG avg
18 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.22 | $8.40 | $16.81 |
| premium | $4.53 | $9.03 | $18.05 |
| diesel | $5.61 | $11.17 | $22.34 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$8
Estimated CO2 emission: 17.7 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $5 in charging · 0 stops · 67% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 15.2 | 0 | $5.31 | $2.43 |
| Efficient EV | 12.7 | 0 | $4.43 | $2.02 |
| EV Truck/SUV | 20.2 | 0 | $7.08 | $3.24 |
Gas CO2
18 kg
EV CO2
6 kg (67% less)
This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.
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.
Destination
Douglas, WY
Night in Douglas on Saturday
Local time
10:18 PM
MDT
Current temp
75°F
Unavailable
Live forecast
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
31 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
58m on the road
Use the two city cards together: check the sky where you start, then compare it with the local time and temperature at arrival.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
What kind of drive is this?
This drive is predominantly highway-focused, with 94% of the route utilizing major roads like I 25. Expect a consistent, fast-paced experience for most of the trip, including a longest stretch of 45.6 miles on I 25. While the majority is interstate, the inclusion of I 25 BUS and Bryan Stock Trail means you'll have brief transitions into more localized driving as you approach your destination. The profile suggests a smooth, efficient journey largely free of complex road changes.
94% highway — fuel and pacing are the main things to plan.
11 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 45.6 mi on I 25.
How Hard Is This Drive?
2/10
This is a straightforward highway drive that stays mostly on I 25 and I 25 BUS. Navigation is very simple - set it and forget it for most of the drive. The trickiest moment comes around 0.3 miles in.
Driving Effort
2/10
Very easy - short and simple to drive
Balances navigation complexity with total wheel time.
The drive from Casper, WY to Douglas, WY is easy. At 58m with 94% highway, most drivers will find it relaxed and low-stress.
Where does it get tricky?
The main spots that need attention: at 0.3 miles: Navigation decision point; at 0.9 miles (Bryan Stock Trail): Navigation decision point; at 2.2 miles (I 25 BUS; US 20; US 26; US 87 / East Yellowstone Highway): Navigation decision point.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 58m. Total distance: 50.6 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
58m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
First-Time Driver
Mostly highway driving (94%). Straightforward navigation.
Frequently Asked Questions
The longest stretch is about 45.6 miles on I 25. The full list of main roads is in the Roads section above.
Yes. At under 2 hours behind the wheel, this works well for families — plan one quick stop if you have younger kids.
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 0.3 miles: Navigation decision point; at 0.9 miles (Bryan Stock Trail): Navigation decision point; at 2.2 miles (I 25 BUS; US 20; US 26; US 87 / East Yellowstone Highway): Navigation decision point.
Yes. A round trip is manageable in a single day if you plan a break at Douglas, WY before heading back.
How this page is built
Compiled by the US Trip Planner planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, and EIA for fuel prices. See our methodology for refresh cadence and limitations.
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