Boise to Fort Hall is 241 miles and takes about 3 hours 57 minutes via Vietnam Veterans Memorial Highway and I 86, with a fuel budget near $43 and enough daylight to finish in a day. This trip stays within Idaho, connecting two points in the Mountain West region. Expect a drive that is largely on surface roads, offering a more local feel than a pure interstate experience. With only one recommended stop, this route is easily manageable as a single-day excursion, making it a straightforward option for connecting these two Idaho locations.
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
120.5 miles from Boise, ID
A natural place for your longest stop of the day
, about 1h 58m into the drive
.
Main Roads
Road
Distance
Duration
Vietnam Veterans Memorial Highway
166.5 mi
2h 36m
I 86
61.5 mi
57m
South Treaty Highway
5 mi
7m
South Broadway Avenue
2.8 mi
5m
Yellowstone Avenue
2.1 mi
3m
North Yellowstone Highway
1.5 mi
2m
West Myrtle Street
0.6 mi
1m
Idaho Medal of Honor Highway
0.4 mi
<1m
Longest stretch:
Vietnam Veterans Memorial Highway
— 166.5 mi, about 2h 36m
Traffic on I-84
Hour-of-day weekday pattern from 62 FHWA count stations on your route.
Peak
4 PM
~1,309 veh/hr typical
· worst 1,626
Quietest
2 AM
~114 veh/hr
Peak-to-quiet ratio
11.5×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 52 weeks of 2023 FHWA Travel Monitoring Analysis System data. Weekday hours only (Mon–Fri).
Turn-by-Turn Driving Directions
Step-by-step road directions between Boise, ID and Fort Hall, 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
166 mi·2 hr 36 min·Vietnam Veterans Memorial Highway
Use the straight / slight right lanes.
8
Continue on I 86; US 30
62 mi·57 min·I 86; US 30
9
Take the exit
0.2 mi·26 sec
10
Keep slight left at fork
231 ft·7 sec
11
Turn straight onto US 91
2.1 mi·3 min·Yellowstone Avenue
12
Continue on US 91
1.5 mi·2 min·North Yellowstone Highway
13
Continue on US 91
5.0 mi·7 min·South Treaty Highway
14
Turn left onto 3rd Street
490 ft·23 sec·3rd Street
15
Turn right onto B Avenue
297 ft·12 sec·B Avenue
16
Arrive at destination
B Avenue
Trip Plan
Given the 3 hour 57 minute drive time, leaving Boise in the morning allows ample time to reach Fort Hall with daylight to spare. You'll only need one stop, so plan this strategically for a break or fuel. The fuel cost is estimated at $43, so ensure your tank is topped up before you depart to avoid unexpected stops. Since the majority of this route is on surface roads, keep an eye on posted speed limits as they can vary more frequently than on interstates. This route is very flexible due to its manageable length and single stop recommendation.
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 120.5 miles from Boise, ID, or about 1h 58m into the drive.
The longest continuous stretch on this route runs about 166.5 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 53 miles or 55m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 120.5 miles or 1h 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 3h 10m
Traffic, exits, and arrival timing usually matter more near Fort Hall, 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 241 miles and 3h 57m.
Your first comfortable stop window is around 53 miles from Boise, ID.
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 Vietnam Veterans Memorial Highway for about 166.5 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 9
5 decision points cluster between mile 0 and 240.9 — 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
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
232.2 mi into trip|~3h 43m in
Keep slight left at fork
Highway fork - watch signs carefully
5
240.9 mi into trip|~3h 57m in|B Avenue
Turn right onto B Avenue
Navigation decision point
Fuel & Cost
Regular Gas
$37.56 one way
$75.13 round trip
$3.96/gal25.4 MPG avg84 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.17
$39.59
$79.19
premium
$4.47
$42.45
$84.90
diesel
$4.80
$45.51
$91.01
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$38
Meals
$25–$50
Total
$63–$88
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 84.3 kg one way.
Prices: EIA weekly data, 2026-07-13.
Driving Electric?
About $25 in charging
· 0 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
72.3
0
$25.31
$11.57
Efficient EV
60.3
0
$21.09
$9.64
EV Truck/SUV
96.4
1
$33.74
$15.42
Gas CO2
84 kg
EV CO2
28 kg (67% 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 Jul 18, 2026
Origin
Boise, ID
Morning
in Boise on Sunday
Local time
10:38 AM
MDT
Current temp
101°F
Patchy Smoke
W 2 to 8 mph1% chanceLive forecast
Destination
Fort Hall, ID
Morning
in Fort Hall on Sunday
Local time
10:38 AM
MDT
Current temp
93°F
Sunny
NNW 5 mph14% chanceLive 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
8 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
3h 57m on the road
The weather snapshot is not static. If you are leaving later, give both cities one more quick forecast check before departure.
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...
8 mi from route
~20 min detour
Free
near mile 99.7
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?
This route is mostly surface roads, with only about 26% of the drive on highways. You'll encounter a longest stretch of 166.5 miles on Vietnam Veterans Memorial Highway before transitioning to other roads. This means you'll experience significant stretches of cruising through local areas rather than high-speed interstate travel. Be prepared for a more rural feel and potentially more frequent changes in speed limits as you move between highway and surface road segments.
Only 26% highway — the rest is turn-by-turn surface driving.
16 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 166.5 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 3h 57m drive. You will face about 9 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 3.7 miles (US 20; US 26 / Idaho Medal of Honor Highway): Lane positioning matters here.
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.
Top landmarks
•Idaho State Capitol — Idaho state capitol building in Boise, Idaho, U.S.A.
•Cathedral of St. John the Evangelist — church in Idaho, United States
•Morris Hill Cemetery Mausoleum — mausoleum in Morris Hill Cemetery, Boise, Idaho
Mostly surface roads route profile with national parks nearby.
Frequently Asked Questions
The longest stretch is about 166.5 miles on Vietnam Veterans Memorial Highway. The full list of main roads is in the Roads section above.
Yes — we found about 15 rest areas or service plazas within a short detour of the route (from OpenStreetMap). See the Rest Stops tab under Nearby Places for locations and mile markers. Plan to stretch, use the bathroom, and top off fluids every 2–3 hours on longer drives.
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 3.7 miles (US 20; US 26 / Idaho Medal of Honor Highway): Lane positioning matters here.
Yes — Hagerman Fossil Beds National Monument. See the National Parks section for detour distances and tips on detours.
Possible but tiring. At 4.0 hours each way, an in-and-out day trip would put you behind the wheel for 7.9 hours — manageable with a long break at Fort Hall, ID, but most travelers stay overnight.
