Origin
Casper, WY
Morning in Casper on Saturday
Local time
7:50 AM
MDT
Current temp
44°F
Unavailable
Live forecast
Trip from Casper, WY to Arapahoe, WY
Compiled and reviewed by the Trip.ovh planning team at COD Solutions Oy · Last reviewed Apr 18, 2026 · Editorial standards
Drive Time
2h 38m
Distance
131.7 mi
212 km
Drive Score
9/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$21
one way
EV Charging
Unknown
Best Time to Leave
4 AM
2h 28m
★
6 AM
2h 38m
8 AM
2h 59m
10 AM
2h 46m
12 PM
2h 44m
3 PM
2h 47m
5 PM
2h 58m
8 PM
2h 32m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Casper, WY
Taryn Elliott
Arapahoe, WY
Tom Fisk
Trip Overview
The drive from Casper, WY to Arapahoe, WY covers 131.7 miles and takes about 2h 38m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on West Yellowstone Highway, US 26, Rendezvous Road for much of the mileage, and the overall profile is turn-heavy local drive. The longest uninterrupted segment is about 94.3 miles on West Yellowstone Highway. At current regular gas prices, budget about $20.87 one way before food or hotel costs.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Break Rhythm
1 planned break
A short stop every 2 to 3 hours is enough for this drive.
Midpoint
65.8 miles from Casper, WY
A natural place for your longest stop of the day , about 1h 19m into the drive .
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 2h 38m. Total distance: 131.7 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
2h 38m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (22%). Straightforward navigation.
Scenic Drive
Turn-heavy local drive route profile.
Drive Character
Expect a 2h 38m drive with frequent turns across 131.7 miles of local and secondary roads.
This route has more turning and local-road decision points than a simple highway run.
There are about 16 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
West Yellowstone Highway is the longest continuous segment at about 94.3 miles.
How Hard Is This Drive?
Expect a hands-on drive with frequent turns and local roads rather than long highway stretches. There are only a few real navigation decisions along the way. The trickiest moment comes around 0.3 miles in.
Driving Effort
3/10
Easy - simple navigation with a manageable amount of wheel time
Balances navigation complexity with total wheel time.
This is a straightforward 2h 38m drive. You will face about 8 decision points, but nothing that requires special attention if you follow navigation.
Where does it get tricky?
The main spots that need attention: at 0.3 miles: Navigation decision point; at 0.9 miles (Bryan Stock Trail): Navigation decision point; at 4.3 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
Critical Maneuvers
5 of 8 key pointsThese are the spots where you need to pay the most attention. Preview them before you drive.
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
4.3 mi into trip
|
~8m in
Take the exit toward US 20 West, US 26 West, WY 220 West: Shoshoni, Port of Entry
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Toward US 20 West, US 26 West, WY 220 West: Sho...
4
4.7 mi into trip
|
~9m in
Keep slight left at fork
Highway fork - watch signs carefully
4
7.7 mi into trip
|
~13m in
|
US 20; US 26 / West Yellowstone Highway
Turn right onto US 20; US 26 / West Yellowstone Highway
Navigation decision point
Main Roads
| Road | Distance | Duration |
|---|---|---|
| West Yellowstone Highway | 94.3 mi | 1h 47m |
| US 26 | 23.3 mi | 26m |
| Rendezvous Road | 5.5 mi | 8m |
| US 20 | 5.1 mi | 6m |
| Bryan Stock Trail | 1.1 mi | 1m |
| Left Hand Ditch Road | 0.8 mi | 3m |
| East Sunlight Drive | 0.5 mi | 1m |
| North Sunlight Drive | 0.3 mi | 1m |
Longest stretch:
West Yellowstone Highway
— 94.3 mi, about 1h 47m
Turn-by-Turn Driving Directions
Step-by-step road directions between Casper, WY and Arapahoe, 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
Turn right onto US 20; US 26; US 87
0.2 mi
·
16 sec
·
East F Street
6
Take the ramp onto US 20; US 26; US 87
2.1 mi
·
2 min
·
US 20; US 26; US 87
7
Take the exit
0.3 mi
·
45 sec
Toward US 20 West, US 26 West, WY 220 West: Shoshoni, Port of Entry
8
Keep slight left at fork
350 ft
·
10 sec
9
Turn left onto US 20; US 26
3.0 mi
·
3 min
·
US 20; US 26
10
Turn right onto US 20; US 26
94 mi
·
1 hr 47 min
·
West Yellowstone Highway
11
Continue on US 26; WY 789
18 mi
·
20 min
·
US 26; WY 789
12
Continue on US 26; WY 789
5.6 mi
·
6 min
·
US 26; WY 789
Use the straight lane.
13
Turn right onto Rendezvous Road
2.9 mi
·
3 min
·
Rendezvous Road
14
Continue on Rendezvous Road
2.7 mi
·
4 min
·
Rendezvous Road
15
Turn right onto Left Hand Ditch Road
0.8 mi
·
3 min
·
Left Hand Ditch Road
16
Arrive at destination
Left Hand Ditch Road
Trip Plan
Morning Departure
Leave by 9 AM and you'll arrive before lunch.
Evening Departure
Even a 4 PM departure gets you there before dark in summer.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 65.8 miles from Casper, WY, or about 1h 19m into the drive.
The longest continuous stretch on this route runs about 94.3 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 29 miles or 37m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 65.8 miles or 1h 19m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 2h 7m
Traffic, exits, and arrival timing usually matter more near Arapahoe, WY than in the middle of the route.
Before You Leave
+
Open the route before leaving Casper, 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 Casper, WY
This is one driving day of about 131.7 miles and 2h 38m.
Your first comfortable stop window is around 29 miles from Casper, 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 West Yellowstone Highway for about 94.3 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 65.8 mi from Casper, WY · 1h 19m into the drive
Mid-route town
Meal stop
66 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 29 miles helps settle the day before fatigue starts building.
Halfway reset
Meal breakThe midpoint is around 65.8 miles from Casper, WY, which is a good place for a longer meal and fuel stop.
Before the longest stretch
Fuel checkTop up before West Yellowstone Highway if your tank is already low. That segment runs about 94.3 miles.
Arriving in Arapahoe, WY
The final approach into Arapahoe, WY usually feels slower than the middle of the drive, so avoid planning your tightest schedule at the very end.
Try to arrive with enough fuel left to skip an immediate station stop unless you already know the area around Arapahoe, WY.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Fuel & Cost
Regular Gas
$20.87 one way
$41.74 round trip
$4.03/gal
25.4 MPG avg
46 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.22 | $21.88 | $43.75 |
| premium | $4.53 | $23.49 | $46.99 |
| diesel | $5.61 | $29.08 | $58.16 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$21
Meals
$25–$50
Total
$46–$71
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 46.1 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $14 in charging · 0 stops · 67% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 39.5 | 0 | $13.83 | $6.32 |
| Efficient EV | 32.9 | 0 | $11.52 | $5.27 |
| EV Truck/SUV | 52.7 | 0 | $18.44 | $8.43 |
Gas CO2
46 kg
EV CO2
15 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
Arapahoe, WY
Morning in Arapahoe on Saturday
Local time
7:50 AM
MDT
Current temp
42°F
Unavailable
Live forecast
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
2 degrees cooler at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
2h 38m 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.
Frequently Asked Questions
The drive from Casper, WY to Arapahoe, WY covers 131.7 miles and takes about 2h 38m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are West Yellowstone Highway, US 26, Rendezvous Road. Expect a mix of highway and local road driving.
This is a comfortable same-day trip.
The midpoint is about 65.8 miles from Casper, WY. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $20.87 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
Leave by 9 AM and you'll arrive before lunch. Even a 4 PM departure gets you there before dark in summer.
Plan about 1 meaningful break for fuel, food, or rest. A short stop every 2 to 3 hours is enough for this drive.
This is a straightforward 2h 38m drive. You will face about 8 decision points, but nothing that requires special attention if you follow navigation.
The main spots that need attention: at 0.3 miles: Navigation decision point; at 0.9 miles (Bryan Stock Trail): Navigation decision point; at 4.3 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
The route from Casper, WY to Arapahoe, WY does not surface many named destination signs beyond the main corridor.
How this page is built
Compiled by the Trip.ovh 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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