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Trip from Casper, WY to Buffalo, WY

Compiled and reviewed by the Trip.ovh planning team at COD Solutions Oy · Last reviewed Apr 18, 2026 · Editorial standards

Drive Time

1h 53m

Distance

115 mi

185 km

Drive Score

8/10

Great drive

Same Day?

Yes, doable

Fuel Cost

$18

one way

EV Charging

Unknown

Best Time to Leave

Save up to 25 min
4 AM
1h 46m ★
6 AM
1h 54m
8 AM
2h 11m
10 AM
2h 0m
12 PM
1h 58m
3 PM
2h 1m
5 PM
2h 10m
8 PM
1h 49m

Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.

Best Time Drive vs Fly
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Downtown Casper, WY, WY

Casper, WY

Taryn Elliott

city in and county seat of Johnson County, Wyoming, United States

Buffalo, WY

Wikimedia Commons

Trip Overview

The drive from Casper, WY to Buffalo, WY covers 115 miles and takes about 1h 53m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.

The route leans on I 25, US 20, South Main Street for much of the mileage, and the overall profile is highway-focused drive. The longest uninterrupted segment is about 109 miles on I 25. At current regular gas prices, budget about $18.22 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.

Midpoint

57.5 miles from Casper, WY

A natural place for your longest stop of the day , about 58m into the drive .

Who Is This Route For?

Weekend Trip

Doable as a same-day drive at 1h 53m. Total distance: 115 miles.

Family Friendly

Moderate complexity with 0 natural rest stops along the way.

Solo Traveler

1h 53m drive, comfortable solo distance.

First-Time Driver

Mostly highway driving (97%). Straightforward navigation.

Drive Character

This is a 1h 53m highway drive covering 115 miles, with most of the trip on I 25 and US 20. The longest continuous stretch is about 109 miles on I 25.

Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 10 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
I 25 is the longest continuous segment at about 109 miles.

How Hard Is This Drive?

This is a straightforward highway drive that stays mostly on I 25 and US 20. 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 1/10

Very easy - short and simple to drive

Balances navigation complexity with total wheel time.

The drive from Casper, WY to Buffalo, WY is easy. At 1h 53m with 97% 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 miles (US 20; US 26; US 87 / East F Street): Navigation decision point.

Critical Maneuvers

5 of 5 key points

These 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

3
2 mi into trip | ~5m in | US 20; US 26; US 87 / East F Street

Turn right onto US 20; US 26; US 87 / East F Street

Navigation decision point

6
113.3 mi into trip | ~1h 51m in

Take the exit toward I 25 Business, US 87 Business: Buffalo

Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one

Exit 298 Toward I 25 Business, US 87 Business: Buffalo
5
113.7 mi into trip | ~1h 51m in | I 25 Bus; US 87 Bus / South Main Street

Turn left onto I 25 Bus; US 87 Bus / South Main Street

Lane positioning matters here

Use the straight lane.

Main Roads

Road Distance Duration
I 25 109 mi 1h 42m
US 20 2.1 mi 2m
South Main Street 1.3 mi 1m
Bryan Stock Trail 1.1 mi 1m
East Sunlight Drive 0.5 mi 1m
North Sunlight Drive 0.3 mi 1m
East F Street 0.2 mi <1m
North Main Street — —

Some road-level metrics are being recalculated.

Longest stretch: I 25 — 109 mi, about 1h 42m

Turn-by-Turn Driving Directions

Step-by-step road directions between Casper, WY and Buffalo, 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

Continue on I 25; US 87

109 mi · 1 hr 42 min · I 25; US 87
8

Take the exit

0.4 mi · 51 sec
Exit 298 Toward I 25 Business, US 87 Business: Buffalo
9

Turn left onto I 25 Bus; US 87 Bus

1.3 mi · 1 min · South Main Street
Use the straight lane.
10

Arrive at destination

I 25 Bus; US 16; US 87 Bus

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.
You may only need one short stretch break if traffic stays light.
The halfway point lands around 57.5 miles from Casper, WY, or about 58m into the drive.
The longest continuous stretch on this route runs about 109 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 25 miles or 28m in

Use this first pause for coffee, a restroom break, and a quick traffic check ahead.

Halfway reset

Around 57.5 miles or 58m in

This is the best place for your longest stop, a real meal, and a full fuel check.

Final approach

Final hour starts around 1h 33m

Traffic, exits, and arrival timing usually matter more near Buffalo, 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.

Day 1

Settle into the route from Casper, WY

This is one driving day of about 115 miles and 1h 53m.

Your first comfortable stop window is around 25 miles from Casper, WY.
This route can stay practical as a one-day drive if traffic stays reasonable.
The longest stretch is on I 25 for about 109 miles.

Nearby Places

Restaurants, cafes, gas stations and more along your route.

Top Restaurant

Sagewood Cafe

4.6 ★ ★ ★ ★ ★

Buffalo, Wyoming

Near the end, right off the route

0.1 mi from route $10 to $20 mile 115

Hours: 11 am–2:30 pm

+13076847670

Visit website

Eggington's

4.8 ★ ★ ★ ★ ★

Casper, Wyoming

1.5 mi

Top Coffee Stop

Deja Brew

4.7 ★ ★ ★ ★ ★

Buffalo, Wyoming

Near the end, right off the route

0.3 mi from route ~1 min detour $1 to $10 mile 115

Hours: 6 am–4 pm

Sagewood Cafe

4.6 ★ ★ ★ ★ ★

Near the end, right off the route

0.1 mi from route $10 to $20 mile 115

Buffalo, Wyoming

Hours: 11 am–2:30 pm

+13076847670

Visit website

Eggington's

4.8 ★ ★ ★ ★ ★

Near the start, short detour

1.5 mi from route ~4 min detour $10 to $20

Casper, Wyoming

Hours: 6 am–2 pm

+13072658700

Visit website

Deja Brew

4.7 ★ ★ ★ ★ ★

Near the end, right off the route

0.3 mi from route ~1 min detour $1 to $10 mile 115

Buffalo, Wyoming

Hours: 6 am–4 pm

Casper Downtown Development Authority

4.5 ★ ★ ★ ★ ★

Near the start, short detour

1.6 mi from route ~4 min detour

Casper, Wyoming

Hours: 8 am–5 pm

+13073331403

Visit website

Place data sourced from public business listings. Hours and availability may vary.

Fuel & Cost

Regular Gas

$18.22 one way

$36.45 round trip

$4.03/gal 25.4 MPG avg 40 kg CO2
Fuel Type $/gal One Way Round Trip
midgrade $4.22 $19.10 $38.20
premium $4.53 $20.51 $41.03
diesel $5.61 $25.39 $50.78

No toll roads detected on this route.

Estimated Trip Cost (one way, 1 person)

Fuel

$18

Meals

$25–$50

Total

$43–$68

Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.

Estimated CO2 emission: 40.2 kg one way. Prices: EIA weekly data, 2026-04-13.

Driving Electric?

About $12 in charging · 0 stops · 68% less CO2

Vehicle Type kWh Stops DC Fast Home Charge
Average EV 34.5 0 $12.08 $5.52
Efficient EV 28.8 0 $10.06 $4.60
EV Truck/SUV 46 0 $16.10 $7.36

Gas CO2

40 kg

EV CO2

13 kg (68% 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.

Forecast as of Apr 15, 2026

Origin

Casper, WY

Late night in Casper on Saturday

Local time

2:13 AM

MDT

Current temp

44°F

Unavailable

Live forecast

Destination

Buffalo, WY

Late night in Buffalo on Saturday

Local time

2:13 AM

MDT

Current temp

69°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

25 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

1h 53m 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 Buffalo, WY covers 115 miles and takes about 1h 53m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.

The main roads are I 25, US 20, South Main Street. Most of the drive stays on highways, so watch for ramps and exits.

This is a comfortable same-day trip.

The midpoint is about 57.5 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 $18.22 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.

The drive from Casper, WY to Buffalo, WY is easy. At 1h 53m with 97% highway, most drivers will find it relaxed and low-stress.

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 miles (US 20; US 26; US 87 / East F Street): Navigation decision point.

The route from Casper, WY to Buffalo, 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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