Spanning 127.6 miles across the Idaho landscape, this trek from Boise to Twin Falls is a straightforward journey that typically takes about 2 hours and 10 minutes. You will primarily navigate via the Vietnam Veterans Memorial Highway, US 93, and South Broadway Avenue. Given the manageable duration, this route is perfectly suited for a single-day trip, allowing you to reach your destination without the need for an overnight stay. Expect to spend roughly $20 on fuel to complete the transit between these two Mountain West hubs. While the drive is relatively short, it serves as an efficient connection between the state’s major corridors, making it a practical choice for those looking to reach Twin Falls quickly.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Midpoint
63.8 miles from Boise, ID
A natural place for your longest stop of the day
, about 1h 5m into the drive
.
Main Roads
Road
Distance
Duration
Vietnam Veterans Memorial Highway
117.4 mi
1h 50m
US 93
5.3 mi
9m
South Broadway Avenue
2.8 mi
5m
West Myrtle Street
0.6 mi
1m
Idaho Medal of Honor Highway
0.4 mi
<1m
South 6th Street
0.2 mi
<1m
Shoshone Street East
<0.1 mi
<1m
Longest stretch:
Vietnam Veterans Memorial Highway
— 117.4 mi, about 1h 50m
Turn-by-Turn Driving Directions
Step-by-step road directions between Boise, ID and Twin Falls, ID.
1
Start on this road
118 ft·10 sec·this road
2
Turn right
263 ft·21 sec
3
Turn right onto South 6th Street
0.2 mi·38 sec·South 6th Street
4
Turn left onto US 20; US 26
0.6 mi·1 min·West Myrtle Street
5
Turn right onto US 20; US 26
2.8 mi·5 min·South Broadway Avenue
6
Take the ramp onto US 20; US 26
0.4 mi·46 sec·Idaho Medal of Honor Highway
Toward I 84 EastUse the left lane.
7
Continue on I 84; US 20; US 26; US 30
117 mi·1 hr 50 min·Vietnam Veterans Memorial Highway
Use the straight / slight right lanes.
8
Take the exit
0.7 mi·1 min
Toward US 93: Twin Falls, Sun Valley
9
Keep slight left at fork
0.2 mi·27 sec
10
Turn right onto US 93
5.3 mi·9 min·US 93
11
Turn slight right onto Shoshone Street East
150 ft·2 sec·Shoshone Street East
12
Arrive at destination
Shoshone Street East
Trip Plan
Since this is a compact drive, you have the flexibility to depart at a time that best suits your schedule without worrying about lengthy rest stops. Budgeting approximately $20 for fuel should cover your needs, but it is always wise to check your levels before leaving the city limits of Boise. Given the lack of formal stops specified for this route, ensure you have your supplies ready before heading out onto the Vietnam Veterans Memorial Highway. Since the drive is just over two hours, you can easily complete it in one go, but stay alert for the frequent turns that characterize the latter portion of the trip. Prioritize a daytime departure to navigate the local road sections with maximum visibility.
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 63.8 miles from Boise, ID, or about 1h 5m into the drive.
The longest continuous stretch on this route runs about 117.4 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 28 miles or 31m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 63.8 miles or 1h 5m 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 43m
Traffic, exits, and arrival timing usually matter more near Twin Falls, ID than in the middle of the route.
Before You Leave
+
Open the route before leaving Boise, ID 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 Boise, ID
This is one driving day of about 127.6 miles and 2h 10m.
Your first comfortable stop window is around 28 miles from Boise, ID.
This route can stay practical as a one-day drive if traffic stays reasonable.
The longest stretch is on Vietnam Veterans Memorial Highway for about 117.4 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Place data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
5 of 8
5 decision points cluster between mile 0 and 121.5 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
5
0 mi into trip|~0m in
Turn right
Navigation decision point
5
0.1 mi into trip|~0m in|South 6th Street
Turn right onto South 6th Street
Navigation decision point
4
0.2 mi into trip|~1m in|US 20; US 26 / West Myrtle Street
Turn left onto US 20; US 26 / West Myrtle Street
Navigation decision point
6
3.7 mi into trip|~8m in|US 20; US 26 / Idaho Medal of Honor Highway
Take the ramp onto US 20; US 26 / Idaho Medal of Honor Highway toward I 84 East
Lane positioning matters here
Use the left lane.
Toward I 84 East
5
121.5 mi into trip|~1h 59m in
Take the exit toward US 93: Twin Falls, Sun Valley
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Toward US 93: Twin Falls, Sun Valley
Fuel & Cost
Regular Gas
$20.22 one way
$40.44 round trip
$4.03/gal25.4 MPG avg45 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.22
$21.19
$42.39
premium
$4.53
$22.76
$45.52
diesel
$5.61
$28.17
$56.34
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$20
Meals
$25–$50
Total
$45–$70
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 44.6 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $13 in charging
· 0 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
38.3
0
$13.40
$6.12
Efficient EV
31.9
0
$11.17
$5.10
EV Truck/SUV
51
0
$17.86
$8.17
Gas CO2
45 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.
Forecast as of Apr 15, 2026
Origin
Boise, ID
Evening
in Boise on Saturday
Local time
8:46 PM
MDT
Current temp
62°F
Unavailable
Live forecast
Destination
Twin Falls, ID
Evening
in Twin Falls on Saturday
Local time
8:46 PM
MDT
Current temp
64°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 warmer at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
2h 10m 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.
National Parks Near This Route
Worth a detour if your schedule allows.
Hagerman Fossil Beds National Monument
National Monument
During the Pliocene, this place looked quite different. Lush wetlands, forests, and grasslands provided excellent habitat for a variety of animals. From fascinating, now-extinct creatures like the sab...
7 mi from route
~18 min detour
Free
near mile 96.8
Caution: Use Caution with "Fossil Beds Information" Signs
Caution: If You Can't Reach Us By Phone, Please Email Us
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
Expect a turn-heavy local drive that demands your full attention rather than a mindless cruise. You will spend 4% of your time on highways, though the longest uninterrupted stretch spans 117.4 miles along the Vietnam Veterans Memorial Highway. The road transitions from city navigation to more technical stretches as you move away from the Boise area. Because the route relies heavily on local roads, you should prepare for a varied driving experience that differs significantly from a standard interstate slog. The character of the road shifts as you navigate these specific segments, keeping the pace engaging for the duration of the 127.6-mile trip.
Only 4% highway — the rest is turn-by-turn surface driving.
12 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 117.4 mi on Vietnam Veterans Memorial Highway.
How Hard Is This Drive?
3/10
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 early in the drive.
Driving Effort3/10
Easy - simple navigation with a manageable amount of wheel time
Balances navigation complexity with total wheel time.
This is a straightforward 2h 10m 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: near the start: Navigation decision point; at 0.1 miles (South 6th Street): Navigation decision point; at 0.2 miles (US 20; US 26 / West Myrtle Street): Navigation decision point.
Boise is the capital and largest city of Idaho. Boise offers numerous recreational opportunities, including extensive hiking and biking in the foothills to the immediate north of downtown. Boise is a regional hub for jazz, theater, and indie music, and is home to several museums.
Twin Falls is the largest city in South Central Idaho and the seventh-largest city in the state. The geology of the Magic Valley is also notable, considering that it once sat atop the hotspot that is under Yellowstone National Park. There are dormant shield volcanoes littered everywhere, and basalt as far as the eye can see, making this a prime spot for anyone interested in geological history. Its proximity to outdoor activities and to casino gaming in nearby Nevada give it a regional tourist flair.
Mostly surface roads route profile with national parks nearby.
Frequently Asked Questions
The longest stretch is about 117.4 miles on Vietnam Veterans Memorial Highway. The full list of main roads is in the Roads section above.
Yes, with realistic expectations. Build in a stop roughly every 2 hours, have snacks and activities ready, and check the Nearby Places tabs for kid-friendly stops along the way.
Mostly yes along the main roads, but rural stretches through ID 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: near the start: Navigation decision point; at 0.1 miles (South 6th Street): Navigation decision point; at 0.2 miles (US 20; US 26 / West Myrtle Street): Navigation decision point.
Yes — Hagerman Fossil Beds National Monument. See the National Parks section for detour distances and tips on detours.
Yes. A round trip is manageable in a single day if you plan a break at Twin Falls, ID before heading back.
