The drive from Gillette, WY to Arapahoe, WY covers 255.3 miles and takes about 4h 54m 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, WY 387, State Highway 59 South for much of the mileage,
and the overall profile is mixed drive.
The longest uninterrupted segment is about 94.3 miles on West Yellowstone Highway.
At current regular gas prices, budget about $40.46 one way before food or hotel costs.
Trip Pace
Same-day drive is realistic
A same-day return is possible, but it will make for a full day on the road.
Break Rhythm
1 planned break
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
127.7 miles from Gillette, WY
A natural place for your longest stop of the day
, about 2h 25m into the drive
.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 4h 54m. Total distance: 255.3 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
The drive from Gillette, WY to Arapahoe, WY covers 255.3 miles and takes about 4h 54m, using a mix of highways and local roads.
Expect a mix of faster highway mileage and slower local approaches near the beginning or end.
There are about 17 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?
This route mixes highway mileage with some local-road sections near the start or finish. There are only a few real navigation decisions along the way. The trickiest moment comes around 0.4 miles in near WY 59 / South Douglas Highway.
Driving Effort3/10
Easy - simple navigation with a manageable amount of wheel time
Balances navigation complexity with total wheel time.
This is a straightforward 4h 54m drive. You will face about 11 decision points, but nothing that requires special attention if you follow navigation.
Where does it get tricky?
The main spots that need attention: at 0.4 miles (WY 59 / South Douglas Highway): Navigation decision point; at 38.3 miles (WY 387): Navigation decision point; at 89.5 miles (WY 259): Navigation decision point.
Critical Maneuvers
5 of 11 key points
These are the spots where you need to pay the most attention. Preview them before you drive.
4
0.4 mi into trip|~1m in|WY 59 / South Douglas Highway
Turn right onto WY 59 / South Douglas Highway
Navigation decision point
4
38.3 mi into trip|~46m in|WY 387
Turn right onto WY 387
Navigation decision point
4
89.5 mi into trip|~1h 45m in|WY 259
Turn left onto WY 259
Navigation decision point
6
107.6 mi into trip|~2h 5m in
Take the exit toward I 25 South: Casper
Exit ramp - move to the correct lane early
Toward I 25 South: Casper
5
128.2 mi into trip|~2h 25m 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...
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
On the drive from Gillette, WY to Arapahoe, WY, road signs begin pointing toward Port Of Entry along the way.
Port Of Entry
128.2 mi in|~2h 25m
Main Roads
Road
Distance
Duration
West Yellowstone Highway
94.3 mi
1h 47m
WY 387
51.3 mi
58m
State Highway 59 South
32.8 mi
35m
US 26
23.3 mi
26m
I 25
20.1 mi
18m
WY 259
18.1 mi
20m
Rendezvous Road
5.5 mi
8m
South Douglas Highway
5 mi
9m
Longest stretch:
West Yellowstone Highway
— 94.3 mi, about 1h 47m
Turn-by-Turn Driving Directions
Step-by-step road directions between Gillette, WY and Arapahoe, WY.
1
Start on East 4th Street
0.4 mi·1 min·East 4th Street
2
Turn right onto WY 59
5.0 mi·9 min·South Douglas Highway
3
Continue on WY 59
33 mi·35 min·State Highway 59 South
4
Turn right onto WY 387
51 mi·58 min·WY 387
5
Turn left onto WY 259
18 mi·20 min·WY 259
6
Take the exit
0.4 mi·52 sec
Toward I 25 South: Casper
7
Merge onto I 25; US 87
20 mi·18 min·I 25; US 87
8
Take the exit
0.3 mi·42 sec
Toward US 20 West, US 26 West, WY 220 West: Shoshoni, Port of Entry
9
Keep slight left at fork
0.1 mi·17 sec
10
Turn right onto US 20; US 26
2.7 mi·3 min·US 20; US 26
11
Turn right onto US 20; US 26
94 mi·1 hr 47 min·West Yellowstone Highway
12
Continue on US 26; WY 789
18 mi·20 min·US 26; WY 789
13
Continue on US 26; WY 789
5.6 mi·6 min·US 26; WY 789
Use the straight lane.
14
Turn right onto Rendezvous Road
2.9 mi·3 min·Rendezvous Road
15
Continue on Rendezvous Road
2.7 mi·4 min·Rendezvous Road
16
Turn right onto Left Hand Ditch Road
0.8 mi·3 min·Left Hand Ditch Road
17
Arrive at destination
Left Hand Ditch Road
Trip Plan
Morning Departure
An early start around 7-8 AM gets you there with plenty of daylight left.
Evening Departure
A late afternoon start means arriving after dark. Morning is better.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 127.7 miles from Gillette, WY, or about 2h 25m 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 56 miles or 1h 6m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 127.7 miles or 2h 25m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 3h 58m
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 Gillette, 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 Gillette, WY
This is one driving day of about 255.3 miles and 4h 54m.
Your first comfortable stop window is around 56 miles from Gillette, 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 127.7 mi from Gillette, WY
· 2h 25m into the drive
Place data sourced from public business listings. Hours and availability may vary.
Fuel & Cost
Regular Gas
$40.46 one way
$80.91 round trip
$4.03/gal25.4 MPG avg89 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.22
$42.41
$84.81
premium
$4.53
$45.54
$91.08
diesel
$5.61
$56.37
$112.73
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$40
Meals
$25–$50
Total
$65–$90
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 89.3 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $27 in charging
· 0 stops
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
76.6
0
$26.81
$12.25
Efficient EV
63.8
0
$22.34
$10.21
EV Truck/SUV
102.1
1
$35.74
$16.34
Gas CO2
89 kg
EV CO2
30 kg (66% less)
Plan for 0 charging stops, roughly every 270 miles. Allow 25-40 minutes per stop at a DC fast charger.
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.
Forecast as of Apr 15, 2026
Origin
Gillette, WY
Morning
in Gillette on Saturday
Local time
8:29 AM
MDT
Current temp
73°F
Unavailable
Live forecast
Destination
Arapahoe, WY
Morning
in Arapahoe on Saturday
Local time
8:29 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
31 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
4h 54m on the road
An early start around 7-8 AM gets you there with plenty of daylight left.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
Frequently Asked Questions
The drive from Gillette, WY to Arapahoe, WY covers 255.3 miles and takes about 4h 54m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are West Yellowstone Highway, WY 387, State Highway 59 South. Expect a mix of highway and local road driving.
This is a comfortable same-day trip.
The midpoint is about 127.7 miles from Gillette, WY. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $40.46 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
An early start around 7-8 AM gets you there with plenty of daylight left. A late afternoon start means arriving after dark. Morning is better.
Plan about 1 meaningful break for fuel, food, or rest. Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
This is a straightforward 4h 54m drive. You will face about 11 decision points, but nothing that requires special attention if you follow navigation.
The main spots that need attention: at 0.4 miles (WY 59 / South Douglas Highway): Navigation decision point; at 38.3 miles (WY 387): Navigation decision point; at 89.5 miles (WY 259): Navigation decision point.
On the drive from Gillette, WY to Arapahoe, WY, road signs begin pointing toward Port Of Entry along the way.
